Home / 653,320.53-901,679.99-398,819.34

Finding the Fourth Proportional to 653,320.53, 901,679.99 and 398,819.34

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Solution

The fourth proportional to 653,320.53, 901,679.99 and 398,819.34 is: 550,430.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,320.53 : 901,679.99 = 398,819.34 : x
  2. Step 2: Convert to fraction form
    653,320.53/901,679.99 = 398,819.34/x
  3. Step 3: Cross multiply
    653,320.53x = 901,679.99 × 398,819.34
  4. Step 4: Simplify right side
    653,320.53x = 359,607,416,508.91
  5. Step 5: Solve for x
    x = 359,607,416,508.91/653,320.53
  6. Step 6: Final answer
    x = 550,430.30

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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.