Home / 487,555.20-670,913.28-431,101.44

Finding the Fourth Proportional to 487,555.20, 670,913.28 and 431,101.44

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Solution

The fourth proportional to 487,555.20, 670,913.28 and 431,101.44 is: 593,228.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,555.20 : 670,913.28 = 431,101.44 : x
  2. Step 2: Convert to fraction form
    487,555.20/670,913.28 = 431,101.44/x
  3. Step 3: Cross multiply
    487,555.20x = 670,913.28 × 431,101.44
  4. Step 4: Simplify right side
    487,555.20x = 289,231,681,123.12
  5. Step 5: Solve for x
    x = 289,231,681,123.12/487,555.20
  6. Step 6: Final answer
    x = 593,228.58

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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.