Home / 1,126,209.28-1,685,386.86-921,438.82

Finding the Fourth Proportional to 1,126,209.28, 1,685,386.86 and 921,438.82

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Solution

The fourth proportional to 1,126,209.28, 1,685,386.86 and 921,438.82 is: 1,378,945.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,209.28 : 1,685,386.86 = 921,438.82 : x
  2. Step 2: Convert to fraction form
    1,126,209.28/1,685,386.86 = 921,438.82/x
  3. Step 3: Cross multiply
    1,126,209.28x = 1,685,386.86 × 921,438.82
  4. Step 4: Simplify right side
    1,126,209.28x = 1,552,980,879,521.91
  5. Step 5: Solve for x
    x = 1,552,980,879,521.91/1,126,209.28
  6. Step 6: Final answer
    x = 1,378,945.20

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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.