Home / 928,145.52-1,280,738.12-514,671.91

Finding the Fourth Proportional to 928,145.52, 1,280,738.12 and 514,671.91

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Solution

The fourth proportional to 928,145.52, 1,280,738.12 and 514,671.91 is: 710,190.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,145.52 : 1,280,738.12 = 514,671.91 : x
  2. Step 2: Convert to fraction form
    928,145.52/1,280,738.12 = 514,671.91/x
  3. Step 3: Cross multiply
    928,145.52x = 1,280,738.12 × 514,671.91
  4. Step 4: Simplify right side
    928,145.52x = 659,159,928,655.00
  5. Step 5: Solve for x
    x = 659,159,928,655.00/928,145.52
  6. Step 6: Final answer
    x = 710,190.28

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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.