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Finding the Fourth Proportional to 881,378.60, 1,321,808.70 and 348,722.60

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Solution

The fourth proportional to 881,378.60, 1,321,808.70 and 348,722.60 is: 522,981.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,378.60 : 1,321,808.70 = 348,722.60 : x
  2. Step 2: Convert to fraction form
    881,378.60/1,321,808.70 = 348,722.60/x
  3. Step 3: Cross multiply
    881,378.60x = 1,321,808.70 × 348,722.60
  4. Step 4: Simplify right side
    881,378.60x = 460,944,566,566.62
  5. Step 5: Solve for x
    x = 460,944,566,566.62/881,378.60
  6. Step 6: Final answer
    x = 522,981.35

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Double scale
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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.