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Finding the Fourth Proportional to 566,279.56, 781,465.90 and 311,630.74

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Solution

The fourth proportional to 566,279.56, 781,465.90 and 311,630.74 is: 430,050.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,279.56 : 781,465.90 = 311,630.74 : x
  2. Step 2: Convert to fraction form
    566,279.56/781,465.90 = 311,630.74/x
  3. Step 3: Cross multiply
    566,279.56x = 781,465.90 × 311,630.74
  4. Step 4: Simplify right side
    566,279.56x = 243,528,797,097.28
  5. Step 5: Solve for x
    x = 243,528,797,097.28/566,279.56
  6. Step 6: Final answer
    x = 430,050.48

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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.