Home / 738,724.90-1,108,123.80-384,430.90

Finding the Fourth Proportional to 738,724.90, 1,108,123.80 and 384,430.90

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Solution

The fourth proportional to 738,724.90, 1,108,123.80 and 384,430.90 is: 576,665.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,724.90 : 1,108,123.80 = 384,430.90 : x
  2. Step 2: Convert to fraction form
    738,724.90/1,108,123.80 = 384,430.90/x
  3. Step 3: Cross multiply
    738,724.90x = 1,108,123.80 × 384,430.90
  4. Step 4: Simplify right side
    738,724.90x = 425,997,029,745.42
  5. Step 5: Solve for x
    x = 425,997,029,745.42/738,724.90
  6. Step 6: Final answer
    x = 576,665.32

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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.