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Finding the Fourth Proportional to 978,158.32, 1,349,535.80 and 590,829.04

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Solution

The fourth proportional to 978,158.32, 1,349,535.80 and 590,829.04 is: 815,149.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,158.32 : 1,349,535.80 = 590,829.04 : x
  2. Step 2: Convert to fraction form
    978,158.32/1,349,535.80 = 590,829.04/x
  3. Step 3: Cross multiply
    978,158.32x = 1,349,535.80 × 590,829.04
  4. Step 4: Simplify right side
    978,158.32x = 797,344,941,159.63
  5. Step 5: Solve for x
    x = 797,344,941,159.63/978,158.32
  6. Step 6: Final answer
    x = 815,149.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.