Home / 688,510.20-1,032,765.30-638,743.80

Finding the Fourth Proportional to 688,510.20, 1,032,765.30 and 638,743.80

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Solution

The fourth proportional to 688,510.20, 1,032,765.30 and 638,743.80 is: 958,115.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,510.20 : 1,032,765.30 = 638,743.80 : x
  2. Step 2: Convert to fraction form
    688,510.20/1,032,765.30 = 638,743.80/x
  3. Step 3: Cross multiply
    688,510.20x = 1,032,765.30 × 638,743.80
  4. Step 4: Simplify right side
    688,510.20x = 659,672,432,230.14
  5. Step 5: Solve for x
    x = 659,672,432,230.14/688,510.20
  6. Step 6: Final answer
    x = 958,115.70

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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.