Home / 643,862,421.88-888,722,824.49-376,010,506

Finding the Fourth Proportional to 643,862,421.88, 888,722,824.49 and 376,010,506

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Solution

The fourth proportional to 643,862,421.88, 888,722,824.49 and 376,010,506 is: 519,007,023.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,862,421.88 : 888,722,824.49 = 376,010,506 : x
  2. Step 2: Convert to fraction form
    643,862,421.88/888,722,824.49 = 376,010,506/x
  3. Step 3: Cross multiply
    643,862,421.88x = 888,722,824.49 × 376,010,506
  4. Step 4: Simplify right side
    643,862,421.88x = 334,169,118,928,354,048
  5. Step 5: Solve for x
    x = 334,169,118,928,354,048/643,862,421.88
  6. Step 6: Final answer
    x = 519,007,023.20

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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.