Finding the Fourth Proportional to 862,165,909.80, 1,293,248,864.70 and 499,368,853.80
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Solution
The fourth proportional to 862,165,909.80, 1,293,248,864.70 and 499,368,853.80 is: 749,053,280.70
Step by Step Solution
- Step 1: Write the proportion equation
862,165,909.80 : 1,293,248,864.70 = 499,368,853.80 : x - Step 2: Convert to fraction form
862,165,909.80/1,293,248,864.70 = 499,368,853.80/x - Step 3: Cross multiply
862,165,909.80x = 1,293,248,864.70 × 499,368,853.80 - Step 4: Simplify right side
862,165,909.80x = 645,808,203,243,390,336 - Step 5: Solve for x
x = 645,808,203,243,390,336/862,165,909.80 - Step 6: Final answer
x = 749,053,280.70
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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.