Home / 1,397,541.43-1,928,588.65-777,342.40

Finding the Fourth Proportional to 1,397,541.43, 1,928,588.65 and 777,342.40

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Solution

The fourth proportional to 1,397,541.43, 1,928,588.65 and 777,342.40 is: 1,072,722.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397,541.43 : 1,928,588.65 = 777,342.40 : x
  2. Step 2: Convert to fraction form
    1,397,541.43/1,928,588.65 = 777,342.40/x
  3. Step 3: Cross multiply
    1,397,541.43x = 1,928,588.65 × 777,342.40
  4. Step 4: Simplify right side
    1,397,541.43x = 1,499,173,729,803.76
  5. Step 5: Solve for x
    x = 1,499,173,729,803.76/1,397,541.43
  6. Step 6: Final answer
    x = 1,072,722.21

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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.