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Finding the Fourth Proportional to 587,428.80, 881,143.20 and 557,102.40

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Solution

The fourth proportional to 587,428.80, 881,143.20 and 557,102.40 is: 835,653.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,428.80 : 881,143.20 = 557,102.40 : x
  2. Step 2: Convert to fraction form
    587,428.80/881,143.20 = 557,102.40/x
  3. Step 3: Cross multiply
    587,428.80x = 881,143.20 × 557,102.40
  4. Step 4: Simplify right side
    587,428.80x = 490,886,991,463.68
  5. Step 5: Solve for x
    x = 490,886,991,463.68/587,428.80
  6. Step 6: Final answer
    x = 835,653.60

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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.