Home / 765,781.40-1,148,808.90-260,315.82

Finding the Fourth Proportional to 765,781.40, 1,148,808.90 and 260,315.82

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Solution

The fourth proportional to 765,781.40, 1,148,808.90 and 260,315.82 is: 390,520.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,781.40 : 1,148,808.90 = 260,315.82 : x
  2. Step 2: Convert to fraction form
    765,781.40/1,148,808.90 = 260,315.82/x
  3. Step 3: Cross multiply
    765,781.40x = 1,148,808.90 × 260,315.82
  4. Step 4: Simplify right side
    765,781.40x = 299,053,130,826.80
  5. Step 5: Solve for x
    x = 299,053,130,826.80/765,781.40
  6. Step 6: Final answer
    x = 390,520.24

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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.