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Finding the Fourth Proportional to 566,510.80, 781,807.20 and 311,885.68

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Solution

The fourth proportional to 566,510.80, 781,807.20 and 311,885.68 is: 430,414.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,510.80 : 781,807.20 = 311,885.68 : x
  2. Step 2: Convert to fraction form
    566,510.80/781,807.20 = 311,885.68/x
  3. Step 3: Cross multiply
    566,510.80x = 781,807.20 × 311,885.68
  4. Step 4: Simplify right side
    566,510.80x = 243,834,470,200.90
  5. Step 5: Solve for x
    x = 243,834,470,200.90/566,510.80
  6. Step 6: Final answer
    x = 430,414.51

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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.