Home / 687,124.98-948,017.65-396,698.42

Finding the Fourth Proportional to 687,124.98, 948,017.65 and 396,698.42

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Solution

The fourth proportional to 687,124.98, 948,017.65 and 396,698.42 is: 547,319.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,124.98 : 948,017.65 = 396,698.42 : x
  2. Step 2: Convert to fraction form
    687,124.98/948,017.65 = 396,698.42/x
  3. Step 3: Cross multiply
    687,124.98x = 948,017.65 × 396,698.42
  4. Step 4: Simplify right side
    687,124.98x = 376,077,103,887.11
  5. Step 5: Solve for x
    x = 376,077,103,887.11/687,124.98
  6. Step 6: Final answer
    x = 547,319.80

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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.