Finding the Fourth Proportional to 688,305,821.40, 1,031,723,553.53 and 392,564,219.31
Calculator
Solution
The fourth proportional to 688,305,821.40, 1,031,723,553.53 and 392,564,219.31 is: 588,427,031.62
Step by Step Solution
- Step 1: Write the proportion equation
688,305,821.40 : 1,031,723,553.53 = 392,564,219.31 : x - Step 2: Convert to fraction form
688,305,821.40/1,031,723,553.53 = 392,564,219.31/x - Step 3: Cross multiply
688,305,821.40x = 1,031,723,553.53 × 392,564,219.31 - Step 4: Simplify right side
688,305,821.40x = 405,017,751,333,280,640 - Step 5: Solve for x
x = 405,017,751,333,280,640/688,305,821.40 - Step 6: Final answer
x = 588,427,031.62
Related Problems
Find fourth proportional to 344,152,910.70, 515,861,776.76 and 196,282,109.66
Half scale
Find fourth proportional to 1,376,611,642.80, 2,063,447,107.05 and 785,128,438.62
Double scale
Find fourth proportional to 688,305,822.40, 1,031,723,555.02 and 392,564,220.31
Similar ratio
Find fourth proportional to 1,032,458,732.10, 1,547,585,330.29 and 588,846,328.97
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.