Home / 712,644.28-1,067,479.06-427,430.32

Finding the Fourth Proportional to 712,644.28, 1,067,479.06 and 427,430.32

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Solution

The fourth proportional to 712,644.28, 1,067,479.06 and 427,430.32 is: 640,253.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,644.28 : 1,067,479.06 = 427,430.32 : x
  2. Step 2: Convert to fraction form
    712,644.28/1,067,479.06 = 427,430.32/x
  3. Step 3: Cross multiply
    712,644.28x = 1,067,479.06 × 427,430.32
  4. Step 4: Simplify right side
    712,644.28x = 456,272,916,209.10
  5. Step 5: Solve for x
    x = 456,272,916,209.10/712,644.28
  6. Step 6: Final answer
    x = 640,253.39

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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.