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Finding the Fourth Proportional to 566,279.46, 781,465.79 and 311,630.65

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Solution

The fourth proportional to 566,279.46, 781,465.79 and 311,630.65 is: 430,050.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,279.46 : 781,465.79 = 311,630.65 : x
  2. Step 2: Convert to fraction form
    566,279.46/781,465.79 = 311,630.65/x
  3. Step 3: Cross multiply
    566,279.46x = 781,465.79 × 311,630.65
  4. Step 4: Simplify right side
    566,279.46x = 243,528,692,869.54
  5. Step 5: Solve for x
    x = 243,528,692,869.54/566,279.46
  6. Step 6: Final answer
    x = 430,050.37

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Double scale
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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.