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Finding the Fourth Proportional to 916,857,747.20, 1,375,286,620.80 and 626,620,102.40

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Solution

The fourth proportional to 916,857,747.20, 1,375,286,620.80 and 626,620,102.40 is: 939,930,153.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,857,747.20 : 1,375,286,620.80 = 626,620,102.40 : x
  2. Step 2: Convert to fraction form
    916,857,747.20/1,375,286,620.80 = 626,620,102.40/x
  3. Step 3: Cross multiply
    916,857,747.20x = 1,375,286,620.80 × 626,620,102.40
  4. Step 4: Simplify right side
    916,857,747.20x = 861,782,243,155,045,888
  5. Step 5: Solve for x
    x = 861,782,243,155,045,888/916,857,747.20
  6. Step 6: Final answer
    x = 939,930,153.60

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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.