Home / 498,550,692-687,987,280.08-278,535,770.40

Finding the Fourth Proportional to 498,550,692, 687,987,280.08 and 278,535,770.40

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Solution

The fourth proportional to 498,550,692, 687,987,280.08 and 278,535,770.40 is: 384,372,281.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,550,692 : 687,987,280.08 = 278,535,770.40 : x
  2. Step 2: Convert to fraction form
    498,550,692/687,987,280.08 = 278,535,770.40/x
  3. Step 3: Cross multiply
    498,550,692x = 687,987,280.08 × 278,535,770.40
  4. Step 4: Simplify right side
    498,550,692x = 191,629,067,082,483,360
  5. Step 5: Solve for x
    x = 191,629,067,082,483,360/498,550,692
  6. Step 6: Final answer
    x = 384,372,281.81

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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.