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Finding the Fourth Proportional to 646,853.60, 970,280.40 and 488,223.20

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Solution

The fourth proportional to 646,853.60, 970,280.40 and 488,223.20 is: 732,334.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,853.60 : 970,280.40 = 488,223.20 : x
  2. Step 2: Convert to fraction form
    646,853.60/970,280.40 = 488,223.20/x
  3. Step 3: Cross multiply
    646,853.60x = 970,280.40 × 488,223.20
  4. Step 4: Simplify right side
    646,853.60x = 473,713,401,785.28
  5. Step 5: Solve for x
    x = 473,713,401,785.28/646,853.60
  6. Step 6: Final answer
    x = 732,334.80

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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.