Home / 748,866.70-1,123,300.05-430,002.10

Finding the Fourth Proportional to 748,866.70, 1,123,300.05 and 430,002.10

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Solution

The fourth proportional to 748,866.70, 1,123,300.05 and 430,002.10 is: 645,003.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,866.70 : 1,123,300.05 = 430,002.10 : x
  2. Step 2: Convert to fraction form
    748,866.70/1,123,300.05 = 430,002.10/x
  3. Step 3: Cross multiply
    748,866.70x = 1,123,300.05 × 430,002.10
  4. Step 4: Simplify right side
    748,866.70x = 483,021,380,430.11
  5. Step 5: Solve for x
    x = 483,021,380,430.11/748,866.70
  6. Step 6: Final answer
    x = 645,003.15

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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.