Home / 812,398.26-1,121,148.10-490,101.44

Finding the Fourth Proportional to 812,398.26, 1,121,148.10 and 490,101.44

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Solution

The fourth proportional to 812,398.26, 1,121,148.10 and 490,101.44 is: 676,363.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,398.26 : 1,121,148.10 = 490,101.44 : x
  2. Step 2: Convert to fraction form
    812,398.26/1,121,148.10 = 490,101.44/x
  3. Step 3: Cross multiply
    812,398.26x = 1,121,148.10 × 490,101.44
  4. Step 4: Simplify right side
    812,398.26x = 549,476,298,263.26
  5. Step 5: Solve for x
    x = 549,476,298,263.26/812,398.26
  6. Step 6: Final answer
    x = 676,363.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.