Home / 712,643.28-1,067,477.56-427,429.32

Finding the Fourth Proportional to 712,643.28, 1,067,477.56 and 427,429.32

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Solution

The fourth proportional to 712,643.28, 1,067,477.56 and 427,429.32 is: 640,251.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,643.28 : 1,067,477.56 = 427,429.32 : x
  2. Step 2: Convert to fraction form
    712,643.28/1,067,477.56 = 427,429.32/x
  3. Step 3: Cross multiply
    712,643.28x = 1,067,477.56 × 427,429.32
  4. Step 4: Simplify right side
    712,643.28x = 456,271,207,586.06
  5. Step 5: Solve for x
    x = 456,271,207,586.06/712,643.28
  6. Step 6: Final answer
    x = 640,251.89

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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.