Home / 768,654.36-1,147,935.15-655,124.76

Finding the Fourth Proportional to 768,654.36, 1,147,935.15 and 655,124.76

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Solution

The fourth proportional to 768,654.36, 1,147,935.15 and 655,124.76 is: 978,386.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,654.36 : 1,147,935.15 = 655,124.76 : x
  2. Step 2: Convert to fraction form
    768,654.36/1,147,935.15 = 655,124.76/x
  3. Step 3: Cross multiply
    768,654.36x = 1,147,935.15 × 655,124.76
  4. Step 4: Simplify right side
    768,654.36x = 752,040,739,639.31
  5. Step 5: Solve for x
    x = 752,040,739,639.31/768,654.36
  6. Step 6: Final answer
    x = 978,386.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.