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Finding the Fourth Proportional to 646,859.30, 970,288.95 and 366,923.30

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Solution

The fourth proportional to 646,859.30, 970,288.95 and 366,923.30 is: 550,384.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,859.30 : 970,288.95 = 366,923.30 : x
  2. Step 2: Convert to fraction form
    646,859.30/970,288.95 = 366,923.30/x
  3. Step 3: Cross multiply
    646,859.30x = 970,288.95 × 366,923.30
  4. Step 4: Simplify right side
    646,859.30x = 356,021,623,487.54
  5. Step 5: Solve for x
    x = 356,021,623,487.54/646,859.30
  6. Step 6: Final answer
    x = 550,384.95

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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.