Home / 767,840.28-1,059,642.12-428,301.24

Finding the Fourth Proportional to 767,840.28, 1,059,642.12 and 428,301.24

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Solution

The fourth proportional to 767,840.28, 1,059,642.12 and 428,301.24 is: 591,068.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,840.28 : 1,059,642.12 = 428,301.24 : x
  2. Step 2: Convert to fraction form
    767,840.28/1,059,642.12 = 428,301.24/x
  3. Step 3: Cross multiply
    767,840.28x = 1,059,642.12 × 428,301.24
  4. Step 4: Simplify right side
    767,840.28x = 453,846,033,952.23
  5. Step 5: Solve for x
    x = 453,846,033,952.23/767,840.28
  6. Step 6: Final answer
    x = 591,068.28

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Double scale
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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.