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Finding the Fourth Proportional to 646,713.60, 970,070.40 and 646,713.60

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Solution

The fourth proportional to 646,713.60, 970,070.40 and 646,713.60 is: 970,070.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,713.60 : 970,070.40 = 646,713.60 : x
  2. Step 2: Convert to fraction form
    646,713.60/970,070.40 = 646,713.60/x
  3. Step 3: Cross multiply
    646,713.60x = 970,070.40 × 646,713.60
  4. Step 4: Simplify right side
    646,713.60x = 627,357,720,637.44
  5. Step 5: Solve for x
    x = 627,357,720,637.44/646,713.60
  6. Step 6: Final answer
    x = 970,070.40

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Half scale
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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.