Home / 431,200,819.20-646,801,228.80-120,307,834.20

Finding the Fourth Proportional to 431,200,819.20, 646,801,228.80 and 120,307,834.20

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Solution

The fourth proportional to 431,200,819.20, 646,801,228.80 and 120,307,834.20 is: 180,461,751.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,200,819.20 : 646,801,228.80 = 120,307,834.20 : x
  2. Step 2: Convert to fraction form
    431,200,819.20/646,801,228.80 = 120,307,834.20/x
  3. Step 3: Cross multiply
    431,200,819.20x = 646,801,228.80 × 120,307,834.20
  4. Step 4: Simplify right side
    431,200,819.20x = 77,815,254,994,826,656
  5. Step 5: Solve for x
    x = 77,815,254,994,826,656/431,200,819.20
  6. Step 6: Final answer
    x = 180,461,751.30

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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.