Home / 1,440,419,620.40-1,987,781,165.17-780,369,898.40

Finding the Fourth Proportional to 1,440,419,620.40, 1,987,781,165.17 and 780,369,898.40

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Solution

The fourth proportional to 1,440,419,620.40, 1,987,781,165.17 and 780,369,898.40 is: 1,076,911,591.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,419,620.40 : 1,987,781,165.17 = 780,369,898.40 : x
  2. Step 2: Convert to fraction form
    1,440,419,620.40/1,987,781,165.17 = 780,369,898.40/x
  3. Step 3: Cross multiply
    1,440,419,620.40x = 1,987,781,165.17 × 780,369,898.40
  4. Step 4: Simplify right side
    1,440,419,620.40x = 1,551,204,585,893,256,704
  5. Step 5: Solve for x
    x = 1,551,204,585,893,256,704/1,440,419,620.40
  6. Step 6: Final answer
    x = 1,076,911,591.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.