Home / 1,223,783.76-1,689,064.56-781,975.92

Finding the Fourth Proportional to 1,223,783.76, 1,689,064.56 and 781,975.92

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Solution

The fourth proportional to 1,223,783.76, 1,689,064.56 and 781,975.92 is: 1,079,282.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,783.76 : 1,689,064.56 = 781,975.92 : x
  2. Step 2: Convert to fraction form
    1,223,783.76/1,689,064.56 = 781,975.92/x
  3. Step 3: Cross multiply
    1,223,783.76x = 1,689,064.56 × 781,975.92
  4. Step 4: Simplify right side
    1,223,783.76x = 1,320,807,813,245.40
  5. Step 5: Solve for x
    x = 1,320,807,813,245.40/1,223,783.76
  6. Step 6: Final answer
    x = 1,079,282.02

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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.