Home / 426,023.10-638,257.05-346,707.90

Finding the Fourth Proportional to 426,023.10, 638,257.05 and 346,707.90

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Solution

The fourth proportional to 426,023.10, 638,257.05 and 346,707.90 is: 519,429.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,023.10 : 638,257.05 = 346,707.90 : x
  2. Step 2: Convert to fraction form
    426,023.10/638,257.05 = 346,707.90/x
  3. Step 3: Cross multiply
    426,023.10x = 638,257.05 × 346,707.90
  4. Step 4: Simplify right side
    426,023.10x = 221,288,761,465.70
  5. Step 5: Solve for x
    x = 221,288,761,465.70/426,023.10
  6. Step 6: Final answer
    x = 519,429.02

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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.