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Finding the Fourth Proportional to 519,885.20, 779,827.80 and 500,202.20

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Solution

The fourth proportional to 519,885.20, 779,827.80 and 500,202.20 is: 750,303.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,885.20 : 779,827.80 = 500,202.20 : x
  2. Step 2: Convert to fraction form
    519,885.20/779,827.80 = 500,202.20/x
  3. Step 3: Cross multiply
    519,885.20x = 779,827.80 × 500,202.20
  4. Step 4: Simplify right side
    519,885.20x = 390,071,581,181.16
  5. Step 5: Solve for x
    x = 390,071,581,181.16/519,885.20
  6. Step 6: Final answer
    x = 750,303.30

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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.