Home / 763,400.70-1,145,101.05-448,472.70

Finding the Fourth Proportional to 763,400.70, 1,145,101.05 and 448,472.70

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Solution

The fourth proportional to 763,400.70, 1,145,101.05 and 448,472.70 is: 672,709.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,400.70 : 1,145,101.05 = 448,472.70 : x
  2. Step 2: Convert to fraction form
    763,400.70/1,145,101.05 = 448,472.70/x
  3. Step 3: Cross multiply
    763,400.70x = 1,145,101.05 × 448,472.70
  4. Step 4: Simplify right side
    763,400.70x = 513,546,559,666.34
  5. Step 5: Solve for x
    x = 513,546,559,666.34/763,400.70
  6. Step 6: Final answer
    x = 672,709.05

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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.