Home / 761,712.30-1,142,568.45-726,720.30

Finding the Fourth Proportional to 761,712.30, 1,142,568.45 and 726,720.30

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Solution

The fourth proportional to 761,712.30, 1,142,568.45 and 726,720.30 is: 1,090,080.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,712.30 : 1,142,568.45 = 726,720.30 : x
  2. Step 2: Convert to fraction form
    761,712.30/1,142,568.45 = 726,720.30/x
  3. Step 3: Cross multiply
    761,712.30x = 1,142,568.45 × 726,720.30
  4. Step 4: Simplify right side
    761,712.30x = 830,327,686,754.54
  5. Step 5: Solve for x
    x = 830,327,686,754.54/761,712.30
  6. Step 6: Final answer
    x = 1,090,080.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.