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Finding the Fourth Proportional to 887,978,009.40, 1,330,175,423.70 and 887,978,009.40

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Solution

The fourth proportional to 887,978,009.40, 1,330,175,423.70 and 887,978,009.40 is: 1,330,175,423.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,978,009.40 : 1,330,175,423.70 = 887,978,009.40 : x
  2. Step 2: Convert to fraction form
    887,978,009.40/1,330,175,423.70 = 887,978,009.40/x
  3. Step 3: Cross multiply
    887,978,009.40x = 1,330,175,423.70 × 887,978,009.40
  4. Step 4: Simplify right side
    887,978,009.40x = 1,181,166,524,889,927,680
  5. Step 5: Solve for x
    x = 1,181,166,524,889,927,680/887,978,009.40
  6. Step 6: Final answer
    x = 1,330,175,423.70

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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.