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Finding the Fourth Proportional to 523,624.40, 785,436.60 and 485,133.20

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Solution

The fourth proportional to 523,624.40, 785,436.60 and 485,133.20 is: 727,699.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,624.40 : 785,436.60 = 485,133.20 : x
  2. Step 2: Convert to fraction form
    523,624.40/785,436.60 = 485,133.20/x
  3. Step 3: Cross multiply
    523,624.40x = 785,436.60 × 485,133.20
  4. Step 4: Simplify right side
    523,624.40x = 381,041,371,155.12
  5. Step 5: Solve for x
    x = 381,041,371,155.12/523,624.40
  6. Step 6: Final answer
    x = 727,699.80

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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.