Finding the Fourth Proportional to 1,223,642,829.99, 1,688,627,348.37 and 666,725,877.03
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Solution
The fourth proportional to 1,223,642,829.99, 1,688,627,348.37 and 666,725,877.03 is: 920,081,842.70
Step by Step Solution
- Step 1: Write the proportion equation
1,223,642,829.99 : 1,688,627,348.37 = 666,725,877.03 : x - Step 2: Convert to fraction form
1,223,642,829.99/1,688,627,348.37 = 666,725,877.03/x - Step 3: Cross multiply
1,223,642,829.99x = 1,688,627,348.37 × 666,725,877.03 - Step 4: Simplify right side
1,223,642,829.99x = 1,125,851,549,818,831,488 - Step 5: Solve for x
x = 1,125,851,549,818,831,488/1,223,642,829.99 - Step 6: Final answer
x = 920,081,842.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.