Finding the Fourth Proportional to 478,553,721.30, 717,830,581.95 and 409,678,967.70
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Solution
The fourth proportional to 478,553,721.30, 717,830,581.95 and 409,678,967.70 is: 614,518,451.55
Step by Step Solution
- Step 1: Write the proportion equation
478,553,721.30 : 717,830,581.95 = 409,678,967.70 : x - Step 2: Convert to fraction form
478,553,721.30/717,830,581.95 = 409,678,967.70/x - Step 3: Cross multiply
478,553,721.30x = 717,830,581.95 × 409,678,967.70 - Step 4: Simplify right side
478,553,721.30x = 294,080,091,796,766,272 - Step 5: Solve for x
x = 294,080,091,796,766,272/478,553,721.30 - Step 6: Final answer
x = 614,518,451.55
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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.