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Finding the Fourth Proportional to 566,279.71, 781,466.14 and 311,630.90

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Solution

The fourth proportional to 566,279.71, 781,466.14 and 311,630.90 is: 430,050.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,279.71 : 781,466.14 = 311,630.90 : x
  2. Step 2: Convert to fraction form
    566,279.71/781,466.14 = 311,630.90/x
  3. Step 3: Cross multiply
    566,279.71x = 781,466.14 × 311,630.90
  4. Step 4: Simplify right side
    566,279.71x = 243,528,991,062.24
  5. Step 5: Solve for x
    x = 243,528,991,062.24/566,279.71
  6. Step 6: Final answer
    x = 430,050.71

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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.