Home / 790,785.04-1,091,288.62-428,208.90

Finding the Fourth Proportional to 790,785.04, 1,091,288.62 and 428,208.90

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Solution

The fourth proportional to 790,785.04, 1,091,288.62 and 428,208.90 is: 590,931.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,785.04 : 1,091,288.62 = 428,208.90 : x
  2. Step 2: Convert to fraction form
    790,785.04/1,091,288.62 = 428,208.90/x
  3. Step 3: Cross multiply
    790,785.04x = 1,091,288.62 × 428,208.90
  4. Step 4: Simplify right side
    790,785.04x = 467,299,499,552.72
  5. Step 5: Solve for x
    x = 467,299,499,552.72/790,785.04
  6. Step 6: Final answer
    x = 590,931.13

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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.