Home / 859,765.90-1,287,671.50-499,043.38

Finding the Fourth Proportional to 859,765.90, 1,287,671.50 and 499,043.38

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Solution

The fourth proportional to 859,765.90, 1,287,671.50 and 499,043.38 is: 747,417.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,765.90 : 1,287,671.50 = 499,043.38 : x
  2. Step 2: Convert to fraction form
    859,765.90/1,287,671.50 = 499,043.38/x
  3. Step 3: Cross multiply
    859,765.90x = 1,287,671.50 × 499,043.38
  4. Step 4: Simplify right side
    859,765.90x = 642,603,937,689.67
  5. Step 5: Solve for x
    x = 642,603,937,689.67/859,765.90
  6. Step 6: Final answer
    x = 747,417.33

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1.5x scale

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.