Home / 749,640,139.60-1,124,564,836.20-312,840,698.80

Finding the Fourth Proportional to 749,640,139.60, 1,124,564,836.20 and 312,840,698.80

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Solution

The fourth proportional to 749,640,139.60, 1,124,564,836.20 and 312,840,698.80 is: 469,304,711.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,640,139.60 : 1,124,564,836.20 = 312,840,698.80 : x
  2. Step 2: Convert to fraction form
    749,640,139.60/1,124,564,836.20 = 312,840,698.80/x
  3. Step 3: Cross multiply
    749,640,139.60x = 1,124,564,836.20 × 312,840,698.80
  4. Step 4: Simplify right side
    749,640,139.60x = 351,809,649,202,715,584
  5. Step 5: Solve for x
    x = 351,809,649,202,715,584/749,640,139.60
  6. Step 6: Final answer
    x = 469,304,711.18

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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.