Home / 431,477,687.20-647,216,530.80-286,358,864.80

Finding the Fourth Proportional to 431,477,687.20, 647,216,530.80 and 286,358,864.80

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Solution

The fourth proportional to 431,477,687.20, 647,216,530.80 and 286,358,864.80 is: 429,538,297.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,477,687.20 : 647,216,530.80 = 286,358,864.80 : x
  2. Step 2: Convert to fraction form
    431,477,687.20/647,216,530.80 = 286,358,864.80/x
  3. Step 3: Cross multiply
    431,477,687.20x = 647,216,530.80 × 286,358,864.80
  4. Step 4: Simplify right side
    431,477,687.20x = 185,336,191,039,682,240
  5. Step 5: Solve for x
    x = 185,336,191,039,682,240/431,477,687.20
  6. Step 6: Final answer
    x = 429,538,297.20

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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.