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Finding the Fourth Proportional to 565,581.60, 780,482.70 and 310,930.92

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Solution

The fourth proportional to 565,581.60, 780,482.70 and 310,930.92 is: 429,073.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,581.60 : 780,482.70 = 310,930.92 : x
  2. Step 2: Convert to fraction form
    565,581.60/780,482.70 = 310,930.92/x
  3. Step 3: Cross multiply
    565,581.60x = 780,482.70 × 310,930.92
  4. Step 4: Simplify right side
    565,581.60x = 242,676,203,955.08
  5. Step 5: Solve for x
    x = 242,676,203,955.08/565,581.60
  6. Step 6: Final answer
    x = 429,073.73

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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.