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Finding the Fourth Proportional to 566,658.18, 781,958.61 and 311,960.16

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Solution

The fourth proportional to 566,658.18, 781,958.61 and 311,960.16 is: 430,488.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,658.18 : 781,958.61 = 311,960.16 : x
  2. Step 2: Convert to fraction form
    566,658.18/781,958.61 = 311,960.16/x
  3. Step 3: Cross multiply
    566,658.18x = 781,958.61 × 311,960.16
  4. Step 4: Simplify right side
    566,658.18x = 243,939,933,088.98
  5. Step 5: Solve for x
    x = 243,939,933,088.98/566,658.18
  6. Step 6: Final answer
    x = 430,488.68

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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.