Home / 487,113.40-672,423.78-296,188.12

Finding the Fourth Proportional to 487,113.40, 672,423.78 and 296,188.12

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Solution

The fourth proportional to 487,113.40, 672,423.78 and 296,188.12 is: 408,865.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,113.40 : 672,423.78 = 296,188.12 : x
  2. Step 2: Convert to fraction form
    487,113.40/672,423.78 = 296,188.12/x
  3. Step 3: Cross multiply
    487,113.40x = 672,423.78 × 296,188.12
  4. Step 4: Simplify right side
    487,113.40x = 199,163,935,241.49
  5. Step 5: Solve for x
    x = 199,163,935,241.49/487,113.40
  6. Step 6: Final answer
    x = 408,865.65

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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.