Home / 691,871.04-954,780.46-390,062.88

Finding the Fourth Proportional to 691,871.04, 954,780.46 and 390,062.88

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Solution

The fourth proportional to 691,871.04, 954,780.46 and 390,062.88 is: 538,285.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,871.04 : 954,780.46 = 390,062.88 : x
  2. Step 2: Convert to fraction form
    691,871.04/954,780.46 = 390,062.88/x
  3. Step 3: Cross multiply
    691,871.04x = 954,780.46 × 390,062.88
  4. Step 4: Simplify right side
    691,871.04x = 372,424,415,995.33
  5. Step 5: Solve for x
    x = 372,424,415,995.33/691,871.04
  6. Step 6: Final answer
    x = 538,285.89

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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.