Home / 689,793,172.40-1,034,689,758.60-639,908,577.20

Finding the Fourth Proportional to 689,793,172.40, 1,034,689,758.60 and 639,908,577.20

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Solution

The fourth proportional to 689,793,172.40, 1,034,689,758.60 and 639,908,577.20 is: 959,862,865.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,793,172.40 : 1,034,689,758.60 = 639,908,577.20 : x
  2. Step 2: Convert to fraction form
    689,793,172.40/1,034,689,758.60 = 639,908,577.20/x
  3. Step 3: Cross multiply
    689,793,172.40x = 1,034,689,758.60 × 639,908,577.20
  4. Step 4: Simplify right side
    689,793,172.40x = 662,106,851,269,137,536
  5. Step 5: Solve for x
    x = 662,106,851,269,137,536/689,793,172.40
  6. Step 6: Final answer
    x = 959,862,865.80

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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.