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Finding the Fourth Proportional to 610,426.05, 915,639.08 and 520,224.45

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Solution

The fourth proportional to 610,426.05, 915,639.08 and 520,224.45 is: 780,336.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,426.05 : 915,639.08 = 520,224.45 : x
  2. Step 2: Convert to fraction form
    610,426.05/915,639.08 = 520,224.45/x
  3. Step 3: Cross multiply
    610,426.05x = 915,639.08 × 520,224.45
  4. Step 4: Simplify right side
    610,426.05x = 476,337,834,190.38
  5. Step 5: Solve for x
    x = 476,337,834,190.38/610,426.05
  6. Step 6: Final answer
    x = 780,336.68

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1.5x scale

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.