Home / 739,640,756.72-1,020,704,794.58-400,551,864.42

Finding the Fourth Proportional to 739,640,756.72, 1,020,704,794.58 and 400,551,864.42

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Solution

The fourth proportional to 739,640,756.72, 1,020,704,794.58 and 400,551,864.42 is: 552,761,870.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,640,756.72 : 1,020,704,794.58 = 400,551,864.42 : x
  2. Step 2: Convert to fraction form
    739,640,756.72/1,020,704,794.58 = 400,551,864.42/x
  3. Step 3: Cross multiply
    739,640,756.72x = 1,020,704,794.58 × 400,551,864.42
  4. Step 4: Simplify right side
    739,640,756.72x = 408,845,208,491,452,160
  5. Step 5: Solve for x
    x = 408,845,208,491,452,160/739,640,756.72
  6. Step 6: Final answer
    x = 552,761,870.92

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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.