Finding the Fourth Proportional to 688,305,817.18, 1,031,723,547.24 and 392,564,215.09
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Solution
The fourth proportional to 688,305,817.18, 1,031,723,547.24 and 392,564,215.09 is: 588,427,025.32
Step by Step Solution
- Step 1: Write the proportion equation
688,305,817.18 : 1,031,723,547.24 = 392,564,215.09 : x - Step 2: Convert to fraction form
688,305,817.18/1,031,723,547.24 = 392,564,215.09/x - Step 3: Cross multiply
688,305,817.18x = 1,031,723,547.24 × 392,564,215.09 - Step 4: Simplify right side
688,305,817.18x = 405,017,744,512,141,120 - Step 5: Solve for x
x = 405,017,744,512,141,120/688,305,817.18 - Step 6: Final answer
x = 588,427,025.32
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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.