Home / 1,078,400.40-1,488,669.84-696,613.20

Finding the Fourth Proportional to 1,078,400.40, 1,488,669.84 and 696,613.20

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Solution

The fourth proportional to 1,078,400.40, 1,488,669.84 and 696,613.20 is: 961,634.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,400.40 : 1,488,669.84 = 696,613.20 : x
  2. Step 2: Convert to fraction form
    1,078,400.40/1,488,669.84 = 696,613.20/x
  3. Step 3: Cross multiply
    1,078,400.40x = 1,488,669.84 × 696,613.20
  4. Step 4: Simplify right side
    1,078,400.40x = 1,037,027,060,985.89
  5. Step 5: Solve for x
    x = 1,037,027,060,985.89/1,078,400.40
  6. Step 6: Final answer
    x = 961,634.53

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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.