Home / 781,245,788.97-1,078,120,256.40-424,013,571.11

Finding the Fourth Proportional to 781,245,788.97, 1,078,120,256.40 and 424,013,571.11

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Solution

The fourth proportional to 781,245,788.97, 1,078,120,256.40 and 424,013,571.11 is: 585,139,307.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,245,788.97 : 1,078,120,256.40 = 424,013,571.11 : x
  2. Step 2: Convert to fraction form
    781,245,788.97/1,078,120,256.40 = 424,013,571.11/x
  3. Step 3: Cross multiply
    781,245,788.97x = 1,078,120,256.40 × 424,013,571.11
  4. Step 4: Simplify right side
    781,245,788.97x = 457,137,619,996,802,304
  5. Step 5: Solve for x
    x = 457,137,619,996,802,304/781,245,788.97
  6. Step 6: Final answer
    x = 585,139,307.57

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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.