Home / 558,700.88-771,909.24-389,689.52

Finding the Fourth Proportional to 558,700.88, 771,909.24 and 389,689.52

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Solution

The fourth proportional to 558,700.88, 771,909.24 and 389,689.52 is: 538,400.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,700.88 : 771,909.24 = 389,689.52 : x
  2. Step 2: Convert to fraction form
    558,700.88/771,909.24 = 389,689.52/x
  3. Step 3: Cross multiply
    558,700.88x = 771,909.24 × 389,689.52
  4. Step 4: Simplify right side
    558,700.88x = 300,804,941,219.17
  5. Step 5: Solve for x
    x = 300,804,941,219.17/558,700.88
  6. Step 6: Final answer
    x = 538,400.69

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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.