Home / 763,338.90-1,145,008.35-448,410.90

Finding the Fourth Proportional to 763,338.90, 1,145,008.35 and 448,410.90

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Solution

The fourth proportional to 763,338.90, 1,145,008.35 and 448,410.90 is: 672,616.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,338.90 : 1,145,008.35 = 448,410.90 : x
  2. Step 2: Convert to fraction form
    763,338.90/1,145,008.35 = 448,410.90/x
  3. Step 3: Cross multiply
    763,338.90x = 1,145,008.35 × 448,410.90
  4. Step 4: Simplify right side
    763,338.90x = 513,434,224,731.02
  5. Step 5: Solve for x
    x = 513,434,224,731.02/763,338.90
  6. Step 6: Final answer
    x = 672,616.35

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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.