Home / 764,121.60-1,146,182.40-409,827.60

Finding the Fourth Proportional to 764,121.60, 1,146,182.40 and 409,827.60

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Solution

The fourth proportional to 764,121.60, 1,146,182.40 and 409,827.60 is: 614,741.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,121.60 : 1,146,182.40 = 409,827.60 : x
  2. Step 2: Convert to fraction form
    764,121.60/1,146,182.40 = 409,827.60/x
  3. Step 3: Cross multiply
    764,121.60x = 1,146,182.40 × 409,827.60
  4. Step 4: Simplify right side
    764,121.60x = 469,737,182,154.24
  5. Step 5: Solve for x
    x = 469,737,182,154.24/764,121.60
  6. Step 6: Final answer
    x = 614,741.40

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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.