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Finding the Fourth Proportional to 572,990.95, 862,815.73 and 424,284.67

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Solution

The fourth proportional to 572,990.95, 862,815.73 and 424,284.67 is: 638,892.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,990.95 : 862,815.73 = 424,284.67 : x
  2. Step 2: Convert to fraction form
    572,990.95/862,815.73 = 424,284.67/x
  3. Step 3: Cross multiply
    572,990.95x = 862,815.73 × 424,284.67
  4. Step 4: Simplify right side
    572,990.95x = 366,079,487,273.86
  5. Step 5: Solve for x
    x = 366,079,487,273.86/572,990.95
  6. Step 6: Final answer
    x = 638,892.27

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.