Home / 748,869.70-1,123,304.55-430,005.10

Finding the Fourth Proportional to 748,869.70, 1,123,304.55 and 430,005.10

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Solution

The fourth proportional to 748,869.70, 1,123,304.55 and 430,005.10 is: 645,007.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,869.70 : 1,123,304.55 = 430,005.10 : x
  2. Step 2: Convert to fraction form
    748,869.70/1,123,304.55 = 430,005.10/x
  3. Step 3: Cross multiply
    748,869.70x = 1,123,304.55 × 430,005.10
  4. Step 4: Simplify right side
    748,869.70x = 483,026,685,353.21
  5. Step 5: Solve for x
    x = 483,026,685,353.21/748,869.70
  6. Step 6: Final answer
    x = 645,007.65

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Half scale
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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.