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Finding the Fourth Proportional to 897,712.80, 1,346,569.20 and 365,615.70

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Solution

The fourth proportional to 897,712.80, 1,346,569.20 and 365,615.70 is: 548,423.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,712.80 : 1,346,569.20 = 365,615.70 : x
  2. Step 2: Convert to fraction form
    897,712.80/1,346,569.20 = 365,615.70/x
  3. Step 3: Cross multiply
    897,712.80x = 1,346,569.20 × 365,615.70
  4. Step 4: Simplify right side
    897,712.80x = 492,326,840,656.44
  5. Step 5: Solve for x
    x = 492,326,840,656.44/897,712.80
  6. Step 6: Final answer
    x = 548,423.55

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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.