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Finding the Fourth Proportional to 565,981.60, 781,050.24 and 311,327.20

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Solution

The fourth proportional to 565,981.60, 781,050.24 and 311,327.20 is: 429,629.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,981.60 : 781,050.24 = 311,327.20 : x
  2. Step 2: Convert to fraction form
    565,981.60/781,050.24 = 311,327.20/x
  3. Step 3: Cross multiply
    565,981.60x = 781,050.24 × 311,327.20
  4. Step 4: Simplify right side
    565,981.60x = 243,162,184,278.53
  5. Step 5: Solve for x
    x = 243,162,184,278.53/565,981.60
  6. Step 6: Final answer
    x = 429,629.13

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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.