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Finding the Fourth Proportional to 566,403.93, 781,659.59 and 311,778.81

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Solution

The fourth proportional to 566,403.93, 781,659.59 and 311,778.81 is: 430,266.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,403.93 : 781,659.59 = 311,778.81 : x
  2. Step 2: Convert to fraction form
    566,403.93/781,659.59 = 311,778.81/x
  3. Step 3: Cross multiply
    566,403.93x = 781,659.59 × 311,778.81
  4. Step 4: Simplify right side
    566,403.93x = 243,704,895,236.39
  5. Step 5: Solve for x
    x = 243,704,895,236.39/566,403.93
  6. Step 6: Final answer
    x = 430,266.96

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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.