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Finding the Fourth Proportional to 646,875.40, 970,658.70 and 291,944.20

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Solution

The fourth proportional to 646,875.40, 970,658.70 and 291,944.20 is: 438,072.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,875.40 : 970,658.70 = 291,944.20 : x
  2. Step 2: Convert to fraction form
    646,875.40/970,658.70 = 291,944.20/x
  3. Step 3: Cross multiply
    646,875.40x = 970,658.70 × 291,944.20
  4. Step 4: Simplify right side
    646,875.40x = 283,378,177,644.54
  5. Step 5: Solve for x
    x = 283,378,177,644.54/646,875.40
  6. Step 6: Final answer
    x = 438,072.27

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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.