Home / 712,318.17-982,999.31-390,048.68

Finding the Fourth Proportional to 712,318.17, 982,999.31 and 390,048.68

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Solution

The fourth proportional to 712,318.17, 982,999.31 and 390,048.68 is: 538,267.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,318.17 : 982,999.31 = 390,048.68 : x
  2. Step 2: Convert to fraction form
    712,318.17/982,999.31 = 390,048.68/x
  3. Step 3: Cross multiply
    712,318.17x = 982,999.31 × 390,048.68
  4. Step 4: Simplify right side
    712,318.17x = 383,417,586,007.69
  5. Step 5: Solve for x
    x = 383,417,586,007.69/712,318.17
  6. Step 6: Final answer
    x = 538,267.31

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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.