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Finding the Fourth Proportional to 543,990.47, 810,518.15 and 513,432.02

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Solution

The fourth proportional to 543,990.47, 810,518.15 and 513,432.02 is: 764,987.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,990.47 : 810,518.15 = 513,432.02 : x
  2. Step 2: Convert to fraction form
    543,990.47/810,518.15 = 513,432.02/x
  3. Step 3: Cross multiply
    543,990.47x = 810,518.15 × 513,432.02
  4. Step 4: Simplify right side
    543,990.47x = 416,145,966,306.78
  5. Step 5: Solve for x
    x = 416,145,966,306.78/543,990.47
  6. Step 6: Final answer
    x = 764,987.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.