Home / 712,291.62-982,962.26-390,001.62

Finding the Fourth Proportional to 712,291.62, 982,962.26 and 390,001.62

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Solution

The fourth proportional to 712,291.62, 982,962.26 and 390,001.62 is: 538,202.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,291.62 : 982,962.26 = 390,001.62 : x
  2. Step 2: Convert to fraction form
    712,291.62/982,962.26 = 390,001.62/x
  3. Step 3: Cross multiply
    712,291.62x = 982,962.26 × 390,001.62
  4. Step 4: Simplify right side
    712,291.62x = 383,356,873,798.86
  5. Step 5: Solve for x
    x = 383,356,873,798.86/712,291.62
  6. Step 6: Final answer
    x = 538,202.14

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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.