Home / 712,601.40-1,068,902.10-380,825.40

Finding the Fourth Proportional to 712,601.40, 1,068,902.10 and 380,825.40

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Solution

The fourth proportional to 712,601.40, 1,068,902.10 and 380,825.40 is: 571,238.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,601.40 : 1,068,902.10 = 380,825.40 : x
  2. Step 2: Convert to fraction form
    712,601.40/1,068,902.10 = 380,825.40/x
  3. Step 3: Cross multiply
    712,601.40x = 1,068,902.10 × 380,825.40
  4. Step 4: Simplify right side
    712,601.40x = 407,065,069,793.34
  5. Step 5: Solve for x
    x = 407,065,069,793.34/712,601.40
  6. Step 6: Final answer
    x = 571,238.10

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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.