Finding the Fourth Proportional to 487,205,134.34, 730,515,854.12 and 155,068,678.79
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Solution
The fourth proportional to 487,205,134.34, 730,515,854.12 and 155,068,678.79 is: 232,510,128.38
Step by Step Solution
- Step 1: Write the proportion equation
487,205,134.34 : 730,515,854.12 = 155,068,678.79 : x - Step 2: Convert to fraction form
487,205,134.34/730,515,854.12 = 155,068,678.79/x - Step 3: Cross multiply
487,205,134.34x = 730,515,854.12 × 155,068,678.79 - Step 4: Simplify right side
487,205,134.34x = 113,280,128,330,271,856 - Step 5: Solve for x
x = 113,280,128,330,271,856/487,205,134.34 - Step 6: Final answer
x = 232,510,128.38
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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.