Finding the Fourth Proportional to 478,553,726.80, 717,830,590.20 and 409,678,973.20
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Solution
The fourth proportional to 478,553,726.80, 717,830,590.20 and 409,678,973.20 is: 614,518,459.80
Step by Step Solution
- Step 1: Write the proportion equation
478,553,726.80 : 717,830,590.20 = 409,678,973.20 : x - Step 2: Convert to fraction form
478,553,726.80/717,830,590.20 = 409,678,973.20/x - Step 3: Cross multiply
478,553,726.80x = 717,830,590.20 × 409,678,973.20 - Step 4: Simplify right side
478,553,726.80x = 294,080,099,124,686,016 - Step 5: Solve for x
x = 294,080,099,124,686,016/478,553,726.80 - Step 6: Final answer
x = 614,518,459.80
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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.