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Finding the Fourth Proportional to 649,663.40, 974,495.10 and 492,199.40

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Solution

The fourth proportional to 649,663.40, 974,495.10 and 492,199.40 is: 738,299.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,663.40 : 974,495.10 = 492,199.40 : x
  2. Step 2: Convert to fraction form
    649,663.40/974,495.10 = 492,199.40/x
  3. Step 3: Cross multiply
    649,663.40x = 974,495.10 × 492,199.40
  4. Step 4: Simplify right side
    649,663.40x = 479,645,903,522.94
  5. Step 5: Solve for x
    x = 479,645,903,522.94/649,663.40
  6. Step 6: Final answer
    x = 738,299.10

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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.