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Finding the Fourth Proportional to 714,631.02, 986,652.27 and 442,987.80

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Solution

The fourth proportional to 714,631.02, 986,652.27 and 442,987.80 is: 611,609.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,631.02 : 986,652.27 = 442,987.80 : x
  2. Step 2: Convert to fraction form
    714,631.02/986,652.27 = 442,987.80/x
  3. Step 3: Cross multiply
    714,631.02x = 986,652.27 × 442,987.80
  4. Step 4: Simplify right side
    714,631.02x = 437,074,918,452.31
  5. Step 5: Solve for x
    x = 437,074,918,452.31/714,631.02
  6. Step 6: Final answer
    x = 611,609.22

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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.