Home / 1,389,169.74-1,916,445.86-815,951.46

Finding the Fourth Proportional to 1,389,169.74, 1,916,445.86 and 815,951.46

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Solution

The fourth proportional to 1,389,169.74, 1,916,445.86 and 815,951.46 is: 1,125,655.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,169.74 : 1,916,445.86 = 815,951.46 : x
  2. Step 2: Convert to fraction form
    1,389,169.74/1,916,445.86 = 815,951.46/x
  3. Step 3: Cross multiply
    1,389,169.74x = 1,916,445.86 × 815,951.46
  4. Step 4: Simplify right side
    1,389,169.74x = 1,563,726,797,477.96
  5. Step 5: Solve for x
    x = 1,563,726,797,477.96/1,389,169.74
  6. Step 6: Final answer
    x = 1,125,655.67

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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.