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Finding the Fourth Proportional to 873,670.20, 1,310,505.30 and 518,501.40

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Solution

The fourth proportional to 873,670.20, 1,310,505.30 and 518,501.40 is: 777,752.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,670.20 : 1,310,505.30 = 518,501.40 : x
  2. Step 2: Convert to fraction form
    873,670.20/1,310,505.30 = 518,501.40/x
  3. Step 3: Cross multiply
    873,670.20x = 1,310,505.30 × 518,501.40
  4. Step 4: Simplify right side
    873,670.20x = 679,498,832,757.42
  5. Step 5: Solve for x
    x = 679,498,832,757.42/873,670.20
  6. Step 6: Final answer
    x = 777,752.10

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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.