Finding the Fourth Proportional to 426,506,237.20, 639,759,355.80 and 361,936,155.70
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Solution
The fourth proportional to 426,506,237.20, 639,759,355.80 and 361,936,155.70 is: 542,904,233.55
Step by Step Solution
- Step 1: Write the proportion equation
426,506,237.20 : 639,759,355.80 = 361,936,155.70 : x - Step 2: Convert to fraction form
426,506,237.20/639,759,355.80 = 361,936,155.70/x - Step 3: Cross multiply
426,506,237.20x = 639,759,355.80 × 361,936,155.70 - Step 4: Simplify right side
426,506,237.20x = 231,552,041,811,360,480 - Step 5: Solve for x
x = 231,552,041,811,360,480/426,506,237.20 - Step 6: Final answer
x = 542,904,233.55
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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.