Home / 767,678.58-1,059,398.28-428,168.70

Finding the Fourth Proportional to 767,678.58, 1,059,398.28 and 428,168.70

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Solution

The fourth proportional to 767,678.58, 1,059,398.28 and 428,168.70 is: 590,873.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,678.58 : 1,059,398.28 = 428,168.70 : x
  2. Step 2: Convert to fraction form
    767,678.58/1,059,398.28 = 428,168.70/x
  3. Step 3: Cross multiply
    767,678.58x = 1,059,398.28 × 428,168.70
  4. Step 4: Simplify right side
    767,678.58x = 453,601,184,329.84
  5. Step 5: Solve for x
    x = 453,601,184,329.84/767,678.58
  6. Step 6: Final answer
    x = 590,873.83

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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.