Home / 815,288.19-1,125,201.50-493,000.59

Finding the Fourth Proportional to 815,288.19, 1,125,201.50 and 493,000.59

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Solution

The fourth proportional to 815,288.19, 1,125,201.50 and 493,000.59 is: 680,403.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,288.19 : 1,125,201.50 = 493,000.59 : x
  2. Step 2: Convert to fraction form
    815,288.19/1,125,201.50 = 493,000.59/x
  3. Step 3: Cross multiply
    815,288.19x = 1,125,201.50 × 493,000.59
  4. Step 4: Simplify right side
    815,288.19x = 554,725,003,368.89
  5. Step 5: Solve for x
    x = 554,725,003,368.89/815,288.19
  6. Step 6: Final answer
    x = 680,403.58

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Double scale
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1.5x scale

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.