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Finding the Fourth Proportional to 566,411.68, 781,670.28 and 311,786.56

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Solution

The fourth proportional to 566,411.68, 781,670.28 and 311,786.56 is: 430,277.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,411.68 : 781,670.28 = 311,786.56 : x
  2. Step 2: Convert to fraction form
    566,411.68/781,670.28 = 311,786.56/x
  3. Step 3: Cross multiply
    566,411.68x = 781,670.28 × 311,786.56
  4. Step 4: Simplify right side
    566,411.68x = 243,714,287,655.44
  5. Step 5: Solve for x
    x = 243,714,287,655.44/566,411.68
  6. Step 6: Final answer
    x = 430,277.65

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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.