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Finding the Fourth Proportional to 891,130.60, 1,336,695.90 and 555,207.40

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Solution

The fourth proportional to 891,130.60, 1,336,695.90 and 555,207.40 is: 832,811.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,130.60 : 1,336,695.90 = 555,207.40 : x
  2. Step 2: Convert to fraction form
    891,130.60/1,336,695.90 = 555,207.40/x
  3. Step 3: Cross multiply
    891,130.60x = 1,336,695.90 × 555,207.40
  4. Step 4: Simplify right side
    891,130.60x = 742,143,455,229.66
  5. Step 5: Solve for x
    x = 742,143,455,229.66/891,130.60
  6. Step 6: Final answer
    x = 832,811.10

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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.