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Finding the Fourth Proportional to 646,869.60, 970,304.40 and 363,434.40

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Solution

The fourth proportional to 646,869.60, 970,304.40 and 363,434.40 is: 545,151.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,869.60 : 970,304.40 = 363,434.40 : x
  2. Step 2: Convert to fraction form
    646,869.60/970,304.40 = 363,434.40/x
  3. Step 3: Cross multiply
    646,869.60x = 970,304.40 × 363,434.40
  4. Step 4: Simplify right side
    646,869.60x = 352,641,997,431.36
  5. Step 5: Solve for x
    x = 352,641,997,431.36/646,869.60
  6. Step 6: Final answer
    x = 545,151.60

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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.