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Finding the Fourth Proportional to 978,656,487.60, 1,467,984,731.40 and 332,424,231.60

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Solution

The fourth proportional to 978,656,487.60, 1,467,984,731.40 and 332,424,231.60 is: 498,636,347.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,656,487.60 : 1,467,984,731.40 = 332,424,231.60 : x
  2. Step 2: Convert to fraction form
    978,656,487.60/1,467,984,731.40 = 332,424,231.60/x
  3. Step 3: Cross multiply
    978,656,487.60x = 1,467,984,731.40 × 332,424,231.60
  4. Step 4: Simplify right side
    978,656,487.60x = 487,993,696,336,177,472
  5. Step 5: Solve for x
    x = 487,993,696,336,177,472/978,656,487.60
  6. Step 6: Final answer
    x = 498,636,347.40

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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.