Home / 790,605.76-1,091,036.28-428,029.60

Finding the Fourth Proportional to 790,605.76, 1,091,036.28 and 428,029.60

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Solution

The fourth proportional to 790,605.76, 1,091,036.28 and 428,029.60 is: 590,681.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,605.76 : 1,091,036.28 = 428,029.60 : x
  2. Step 2: Convert to fraction form
    790,605.76/1,091,036.28 = 428,029.60/x
  3. Step 3: Cross multiply
    790,605.76x = 1,091,036.28 × 428,029.60
  4. Step 4: Simplify right side
    790,605.76x = 466,995,822,513.89
  5. Step 5: Solve for x
    x = 466,995,822,513.89/790,605.76
  6. Step 6: Final answer
    x = 590,681.03

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1.5x scale

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.