Home / 578,416.80-867,625.20-508,432.80

Finding the Fourth Proportional to 578,416.80, 867,625.20 and 508,432.80

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Solution

The fourth proportional to 578,416.80, 867,625.20 and 508,432.80 is: 762,649.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,416.80 : 867,625.20 = 508,432.80 : x
  2. Step 2: Convert to fraction form
    578,416.80/867,625.20 = 508,432.80/x
  3. Step 3: Cross multiply
    578,416.80x = 867,625.20 × 508,432.80
  4. Step 4: Simplify right side
    578,416.80x = 441,129,109,786.56
  5. Step 5: Solve for x
    x = 441,129,109,786.56/578,416.80
  6. Step 6: Final answer
    x = 762,649.20

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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.