Home / 391,163,268.90-586,835,658.96-128,838,406.04

Finding the Fourth Proportional to 391,163,268.90, 586,835,658.96 and 128,838,406.04

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Solution

The fourth proportional to 391,163,268.90, 586,835,658.96 and 128,838,406.04 is: 193,287,501.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,163,268.90 : 586,835,658.96 = 128,838,406.04 : x
  2. Step 2: Convert to fraction form
    391,163,268.90/586,835,658.96 = 128,838,406.04/x
  3. Step 3: Cross multiply
    391,163,268.90x = 586,835,658.96 × 128,838,406.04
  4. Step 4: Simplify right side
    391,163,268.90x = 75,606,970,907,346,816
  5. Step 5: Solve for x
    x = 75,606,970,907,346,816/391,163,268.90
  6. Step 6: Final answer
    x = 193,287,501.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.