Home / 658,051.20-987,076.80-480,904.20

Finding the Fourth Proportional to 658,051.20, 987,076.80 and 480,904.20

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Solution

The fourth proportional to 658,051.20, 987,076.80 and 480,904.20 is: 721,356.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,051.20 : 987,076.80 = 480,904.20 : x
  2. Step 2: Convert to fraction form
    658,051.20/987,076.80 = 480,904.20/x
  3. Step 3: Cross multiply
    658,051.20x = 987,076.80 × 480,904.20
  4. Step 4: Simplify right side
    658,051.20x = 474,689,378,842.56
  5. Step 5: Solve for x
    x = 474,689,378,842.56/658,051.20
  6. Step 6: Final answer
    x = 721,356.30

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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.