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Finding the Fourth Proportional to 649,600.80, 974,401.20 and 369,664.80

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Solution

The fourth proportional to 649,600.80, 974,401.20 and 369,664.80 is: 554,497.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,600.80 : 974,401.20 = 369,664.80 : x
  2. Step 2: Convert to fraction form
    649,600.80/974,401.20 = 369,664.80/x
  3. Step 3: Cross multiply
    649,600.80x = 974,401.20 × 369,664.80
  4. Step 4: Simplify right side
    649,600.80x = 360,201,824,717.76
  5. Step 5: Solve for x
    x = 360,201,824,717.76/649,600.80
  6. Step 6: Final answer
    x = 554,497.20

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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.