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Finding the Fourth Proportional to 562,280.58, 775,966.58 and 307,631.78

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Solution

The fourth proportional to 562,280.58, 775,966.58 and 307,631.78 is: 424,542.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,280.58 : 775,966.58 = 307,631.78 : x
  2. Step 2: Convert to fraction form
    562,280.58/775,966.58 = 307,631.78/x
  3. Step 3: Cross multiply
    562,280.58x = 775,966.58 × 307,631.78
  4. Step 4: Simplify right side
    562,280.58x = 238,711,974,807.92
  5. Step 5: Solve for x
    x = 238,711,974,807.92/562,280.58
  6. Step 6: Final answer
    x = 424,542.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.