Home / 729,216.12-1,006,316.38-406,922.78

Finding the Fourth Proportional to 729,216.12, 1,006,316.38 and 406,922.78

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Solution

The fourth proportional to 729,216.12, 1,006,316.38 and 406,922.78 is: 561,552.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,216.12 : 1,006,316.38 = 406,922.78 : x
  2. Step 2: Convert to fraction form
    729,216.12/1,006,316.38 = 406,922.78/x
  3. Step 3: Cross multiply
    729,216.12x = 1,006,316.38 × 406,922.78
  4. Step 4: Simplify right side
    729,216.12x = 409,493,058,909.14
  5. Step 5: Solve for x
    x = 409,493,058,909.14/729,216.12
  6. Step 6: Final answer
    x = 561,552.40

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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.