Home / 749,253.40-1,123,880.10-520,930.60

Finding the Fourth Proportional to 749,253.40, 1,123,880.10 and 520,930.60

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Solution

The fourth proportional to 749,253.40, 1,123,880.10 and 520,930.60 is: 781,395.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,253.40 : 1,123,880.10 = 520,930.60 : x
  2. Step 2: Convert to fraction form
    749,253.40/1,123,880.10 = 520,930.60/x
  3. Step 3: Cross multiply
    749,253.40x = 1,123,880.10 × 520,930.60
  4. Step 4: Simplify right side
    749,253.40x = 585,463,534,821.06
  5. Step 5: Solve for x
    x = 585,463,534,821.06/749,253.40
  6. Step 6: Final answer
    x = 781,395.90

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Double scale
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Similar ratio
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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.