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Finding the Fourth Proportional to 862,713.10, 1,190,548.80 and 500,351.84

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Solution

The fourth proportional to 862,713.10, 1,190,548.80 and 500,351.84 is: 690,488.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,713.10 : 1,190,548.80 = 500,351.84 : x
  2. Step 2: Convert to fraction form
    862,713.10/1,190,548.80 = 500,351.84/x
  3. Step 3: Cross multiply
    862,713.10x = 1,190,548.80 × 500,351.84
  4. Step 4: Simplify right side
    862,713.10x = 595,693,282,689.79
  5. Step 5: Solve for x
    x = 595,693,282,689.79/862,713.10
  6. Step 6: Final answer
    x = 690,488.28

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1.5x scale

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.