Home / 992,145.78-1,487,256.39-392,907.78

Finding the Fourth Proportional to 992,145.78, 1,487,256.39 and 392,907.78

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Solution

The fourth proportional to 992,145.78, 1,487,256.39 and 392,907.78 is: 588,980.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,145.78 : 1,487,256.39 = 392,907.78 : x
  2. Step 2: Convert to fraction form
    992,145.78/1,487,256.39 = 392,907.78/x
  3. Step 3: Cross multiply
    992,145.78x = 1,487,256.39 × 392,907.78
  4. Step 4: Simplify right side
    992,145.78x = 584,354,606,485.71
  5. Step 5: Solve for x
    x = 584,354,606,485.71/992,145.78
  6. Step 6: Final answer
    x = 588,980.59

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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.