Home / 643,862,421.38-888,722,823.80-376,010,505.50

Finding the Fourth Proportional to 643,862,421.38, 888,722,823.80 and 376,010,505.50

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Solution

The fourth proportional to 643,862,421.38, 888,722,823.80 and 376,010,505.50 is: 519,007,022.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,862,421.38 : 888,722,823.80 = 376,010,505.50 : x
  2. Step 2: Convert to fraction form
    643,862,421.38/888,722,823.80 = 376,010,505.50/x
  3. Step 3: Cross multiply
    643,862,421.38x = 888,722,823.80 × 376,010,505.50
  4. Step 4: Simplify right side
    643,862,421.38x = 334,169,118,224,545,344
  5. Step 5: Solve for x
    x = 334,169,118,224,545,344/643,862,421.38
  6. Step 6: Final answer
    x = 519,007,022.51

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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.