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Finding the Fourth Proportional to 519,899.70, 779,849.55 and 500,216.70

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Solution

The fourth proportional to 519,899.70, 779,849.55 and 500,216.70 is: 750,325.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,899.70 : 779,849.55 = 500,216.70 : x
  2. Step 2: Convert to fraction form
    519,899.70/779,849.55 = 500,216.70/x
  3. Step 3: Cross multiply
    519,899.70x = 779,849.55 × 500,216.70
  4. Step 4: Simplify right side
    519,899.70x = 390,093,768,397.49
  5. Step 5: Solve for x
    x = 390,093,768,397.49/519,899.70
  6. Step 6: Final answer
    x = 750,325.05

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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.