Home / 998,640.09-1,378,123.34-545,931.09

Finding the Fourth Proportional to 998,640.09, 1,378,123.34 and 545,931.09

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Solution

The fourth proportional to 998,640.09, 1,378,123.34 and 545,931.09 is: 753,384.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,640.09 : 1,378,123.34 = 545,931.09 : x
  2. Step 2: Convert to fraction form
    998,640.09/1,378,123.34 = 545,931.09/x
  3. Step 3: Cross multiply
    998,640.09x = 1,378,123.34 × 545,931.09
  4. Step 4: Simplify right side
    998,640.09x = 752,360,374,430.99
  5. Step 5: Solve for x
    x = 752,360,374,430.99/998,640.09
  6. Step 6: Final answer
    x = 753,384.91

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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.