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Finding the Fourth Proportional to 878,602,744.62, 1,317,980,712.78 and 288,215,971.02

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Solution

The fourth proportional to 878,602,744.62, 1,317,980,712.78 and 288,215,971.02 is: 432,349,082.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,602,744.62 : 1,317,980,712.78 = 288,215,971.02 : x
  2. Step 2: Convert to fraction form
    878,602,744.62/1,317,980,712.78 = 288,215,971.02/x
  3. Step 3: Cross multiply
    878,602,744.62x = 1,317,980,712.78 × 288,215,971.02
  4. Step 4: Simplify right side
    878,602,744.62x = 379,863,090,919,519,360
  5. Step 5: Solve for x
    x = 379,863,090,919,519,360/878,602,744.62
  6. Step 6: Final answer
    x = 432,349,082.96

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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.