Home / 868,165.40-1,301,810.70-513,288.20

Finding the Fourth Proportional to 868,165.40, 1,301,810.70 and 513,288.20

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Solution

The fourth proportional to 868,165.40, 1,301,810.70 and 513,288.20 is: 769,673.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,165.40 : 1,301,810.70 = 513,288.20 : x
  2. Step 2: Convert to fraction form
    868,165.40/1,301,810.70 = 513,288.20/x
  3. Step 3: Cross multiply
    868,165.40x = 1,301,810.70 × 513,288.20
  4. Step 4: Simplify right side
    868,165.40x = 668,204,070,943.74
  5. Step 5: Solve for x
    x = 668,204,070,943.74/868,165.40
  6. Step 6: Final answer
    x = 769,673.69

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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.