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Finding the Fourth Proportional to 519,885.30, 778,661.55 and 508,221.30

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Solution

The fourth proportional to 519,885.30, 778,661.55 and 508,221.30 is: 761,191.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,885.30 : 778,661.55 = 508,221.30 : x
  2. Step 2: Convert to fraction form
    519,885.30/778,661.55 = 508,221.30/x
  3. Step 3: Cross multiply
    519,885.30x = 778,661.55 × 508,221.30
  4. Step 4: Simplify right side
    519,885.30x = 395,732,385,201.02
  5. Step 5: Solve for x
    x = 395,732,385,201.02/519,885.30
  6. Step 6: Final answer
    x = 761,191.72

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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.