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Finding the Fourth Proportional to 519,882.30, 778,657.05 and 508,218.30

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Solution

The fourth proportional to 519,882.30, 778,657.05 and 508,218.30 is: 761,187.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,882.30 : 778,657.05 = 508,218.30 : x
  2. Step 2: Convert to fraction form
    519,882.30/778,657.05 = 508,218.30/x
  3. Step 3: Cross multiply
    519,882.30x = 778,657.05 × 508,218.30
  4. Step 4: Simplify right side
    519,882.30x = 395,727,762,234.02
  5. Step 5: Solve for x
    x = 395,727,762,234.02/519,882.30
  6. Step 6: Final answer
    x = 761,187.22

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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.