Finding the Fourth Proportional to 688,305,820.40, 1,031,723,552.03 and 392,564,218.31
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Solution
The fourth proportional to 688,305,820.40, 1,031,723,552.03 and 392,564,218.31 is: 588,427,030.12
Step by Step Solution
- Step 1: Write the proportion equation
688,305,820.40 : 1,031,723,552.03 = 392,564,218.31 : x - Step 2: Convert to fraction form
688,305,820.40/1,031,723,552.03 = 392,564,218.31/x - Step 3: Cross multiply
688,305,820.40x = 1,031,723,552.03 × 392,564,218.31 - Step 4: Simplify right side
688,305,820.40x = 405,017,749,712,710,720 - Step 5: Solve for x
x = 405,017,749,712,710,720/688,305,820.40 - Step 6: Final answer
x = 588,427,030.12
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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.