Home / 999,689.80-1,497,720.30-577,712.20

Finding the Fourth Proportional to 999,689.80, 1,497,720.30 and 577,712.20

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Solution

The fourth proportional to 999,689.80, 1,497,720.30 and 577,712.20 is: 865,519.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,689.80 : 1,497,720.30 = 577,712.20 : x
  2. Step 2: Convert to fraction form
    999,689.80/1,497,720.30 = 577,712.20/x
  3. Step 3: Cross multiply
    999,689.80x = 1,497,720.30 × 577,712.20
  4. Step 4: Simplify right side
    999,689.80x = 865,251,289,497.66
  5. Step 5: Solve for x
    x = 865,251,289,497.66/999,689.80
  6. Step 6: Final answer
    x = 865,519.77

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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.