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Finding the Fourth Proportional to 897,474.80, 1,346,212.20 and 328,854.80

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Solution

The fourth proportional to 897,474.80, 1,346,212.20 and 328,854.80 is: 493,282.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,474.80 : 1,346,212.20 = 328,854.80 : x
  2. Step 2: Convert to fraction form
    897,474.80/1,346,212.20 = 328,854.80/x
  3. Step 3: Cross multiply
    897,474.80x = 1,346,212.20 × 328,854.80
  4. Step 4: Simplify right side
    897,474.80x = 442,708,343,788.56
  5. Step 5: Solve for x
    x = 442,708,343,788.56/897,474.80
  6. Step 6: Final answer
    x = 493,282.20

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Double scale
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Similar ratio
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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.