Home / 1,078,165.40-1,617,248.10-279,440.60

Finding the Fourth Proportional to 1,078,165.40, 1,617,248.10 and 279,440.60

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Solution

The fourth proportional to 1,078,165.40, 1,617,248.10 and 279,440.60 is: 419,160.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,165.40 : 1,617,248.10 = 279,440.60 : x
  2. Step 2: Convert to fraction form
    1,078,165.40/1,617,248.10 = 279,440.60/x
  3. Step 3: Cross multiply
    1,078,165.40x = 1,617,248.10 × 279,440.60
  4. Step 4: Simplify right side
    1,078,165.40x = 451,924,779,412.86
  5. Step 5: Solve for x
    x = 451,924,779,412.86/1,078,165.40
  6. Step 6: Final answer
    x = 419,160.90

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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.