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Finding the Fourth Proportional to 507,835.60, 761,753.40 and 321,672.40

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Solution

The fourth proportional to 507,835.60, 761,753.40 and 321,672.40 is: 482,508.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,835.60 : 761,753.40 = 321,672.40 : x
  2. Step 2: Convert to fraction form
    507,835.60/761,753.40 = 321,672.40/x
  3. Step 3: Cross multiply
    507,835.60x = 761,753.40 × 321,672.40
  4. Step 4: Simplify right side
    507,835.60x = 245,035,044,386.16
  5. Step 5: Solve for x
    x = 245,035,044,386.16/507,835.60
  6. Step 6: Final answer
    x = 482,508.60

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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.