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Finding the Fourth Proportional to 868,164.40, 1,301,809.20 and 513,287.20

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Solution

The fourth proportional to 868,164.40, 1,301,809.20 and 513,287.20 is: 769,672.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,164.40 : 1,301,809.20 = 513,287.20 : x
  2. Step 2: Convert to fraction form
    868,164.40/1,301,809.20 = 513,287.20/x
  3. Step 3: Cross multiply
    868,164.40x = 1,301,809.20 × 513,287.20
  4. Step 4: Simplify right side
    868,164.40x = 668,201,999,202.24
  5. Step 5: Solve for x
    x = 668,201,999,202.24/868,164.40
  6. Step 6: Final answer
    x = 769,672.19

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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.