Home / 747,345.60-1,121,018.40-411,422.40

Finding the Fourth Proportional to 747,345.60, 1,121,018.40 and 411,422.40

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Solution

The fourth proportional to 747,345.60, 1,121,018.40 and 411,422.40 is: 617,133.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,345.60 : 1,121,018.40 = 411,422.40 : x
  2. Step 2: Convert to fraction form
    747,345.60/1,121,018.40 = 411,422.40/x
  3. Step 3: Cross multiply
    747,345.60x = 1,121,018.40 × 411,422.40
  4. Step 4: Simplify right side
    747,345.60x = 461,212,080,572.16
  5. Step 5: Solve for x
    x = 461,212,080,572.16/747,345.60
  6. Step 6: Final answer
    x = 617,133.60

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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.