Finding the Fourth Proportional to 513,913,721.80, 709,180,505.68 and 290,941,655.98
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Solution
The fourth proportional to 513,913,721.80, 709,180,505.68 and 290,941,655.98 is: 401,487,919.00
Step by Step Solution
- Step 1: Write the proportion equation
513,913,721.80 : 709,180,505.68 = 290,941,655.98 : x - Step 2: Convert to fraction form
513,913,721.80/709,180,505.68 = 290,941,655.98/x - Step 3: Cross multiply
513,913,721.80x = 709,180,505.68 × 290,941,655.98 - Step 4: Simplify right side
513,913,721.80x = 206,330,150,711,272,992 - Step 5: Solve for x
x = 206,330,150,711,272,992/513,913,721.80 - Step 6: Final answer
x = 401,487,919.00
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.