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Finding the Fourth Proportional to 878,885.60, 1,318,069.20 and 346,229.60

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Solution

The fourth proportional to 878,885.60, 1,318,069.20 and 346,229.60 is: 519,242.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,885.60 : 1,318,069.20 = 346,229.60 : x
  2. Step 2: Convert to fraction form
    878,885.60/1,318,069.20 = 346,229.60/x
  3. Step 3: Cross multiply
    878,885.60x = 1,318,069.20 × 346,229.60
  4. Step 4: Simplify right side
    878,885.60x = 456,354,571,888.32
  5. Step 5: Solve for x
    x = 456,354,571,888.32/878,885.60
  6. Step 6: Final answer
    x = 519,242.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.