Home / 723,998.70-1,085,998.05-458,934.30

Finding the Fourth Proportional to 723,998.70, 1,085,998.05 and 458,934.30

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Solution

The fourth proportional to 723,998.70, 1,085,998.05 and 458,934.30 is: 688,401.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,998.70 : 1,085,998.05 = 458,934.30 : x
  2. Step 2: Convert to fraction form
    723,998.70/1,085,998.05 = 458,934.30/x
  3. Step 3: Cross multiply
    723,998.70x = 1,085,998.05 × 458,934.30
  4. Step 4: Simplify right side
    723,998.70x = 498,401,754,878.12
  5. Step 5: Solve for x
    x = 498,401,754,878.12/723,998.70
  6. Step 6: Final answer
    x = 688,401.45

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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.