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Finding the Fourth Proportional to 654,508.80, 981,763.20 and 486,547.20

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Solution

The fourth proportional to 654,508.80, 981,763.20 and 486,547.20 is: 729,820.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,508.80 : 981,763.20 = 486,547.20 : x
  2. Step 2: Convert to fraction form
    654,508.80/981,763.20 = 486,547.20/x
  3. Step 3: Cross multiply
    654,508.80x = 981,763.20 × 486,547.20
  4. Step 4: Simplify right side
    654,508.80x = 477,674,136,023.04
  5. Step 5: Solve for x
    x = 477,674,136,023.04/654,508.80
  6. Step 6: Final answer
    x = 729,820.80

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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.