Home / 885,744.60-1,328,616.90-487,613.40

Finding the Fourth Proportional to 885,744.60, 1,328,616.90 and 487,613.40

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Solution

The fourth proportional to 885,744.60, 1,328,616.90 and 487,613.40 is: 731,420.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,744.60 : 1,328,616.90 = 487,613.40 : x
  2. Step 2: Convert to fraction form
    885,744.60/1,328,616.90 = 487,613.40/x
  3. Step 3: Cross multiply
    885,744.60x = 1,328,616.90 × 487,613.40
  4. Step 4: Simplify right side
    885,744.60x = 647,851,403,906.46
  5. Step 5: Solve for x
    x = 647,851,403,906.46/885,744.60
  6. Step 6: Final answer
    x = 731,420.10

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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.