Home / 1,288,367,359.80-1,931,039,385.30-551,435,839.80

Finding the Fourth Proportional to 1,288,367,359.80, 1,931,039,385.30 and 551,435,839.80

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Solution

The fourth proportional to 1,288,367,359.80, 1,931,039,385.30 and 551,435,839.80 is: 826,506,754.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,367,359.80 : 1,931,039,385.30 = 551,435,839.80 : x
  2. Step 2: Convert to fraction form
    1,288,367,359.80/1,931,039,385.30 = 551,435,839.80/x
  3. Step 3: Cross multiply
    1,288,367,359.80x = 1,931,039,385.30 × 551,435,839.80
  4. Step 4: Simplify right side
    1,288,367,359.80x = 1,064,844,325,119,781,120
  5. Step 5: Solve for x
    x = 1,064,844,325,119,781,120/1,288,367,359.80
  6. Step 6: Final answer
    x = 826,506,754.47

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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.