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Finding the Fourth Proportional to 649,818.40, 974,727.60 and 492,354.40

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Solution

The fourth proportional to 649,818.40, 974,727.60 and 492,354.40 is: 738,531.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,818.40 : 974,727.60 = 492,354.40 : x
  2. Step 2: Convert to fraction form
    649,818.40/974,727.60 = 492,354.40/x
  3. Step 3: Cross multiply
    649,818.40x = 974,727.60 × 492,354.40
  4. Step 4: Simplify right side
    649,818.40x = 479,911,422,661.44
  5. Step 5: Solve for x
    x = 479,911,422,661.44/649,818.40
  6. Step 6: Final answer
    x = 738,531.60

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Double scale
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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.