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Finding the Fourth Proportional to 719,027.94, 992,279.34 and 396,758.79

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Solution

The fourth proportional to 719,027.94, 992,279.34 and 396,758.79 is: 547,538.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,027.94 : 992,279.34 = 396,758.79 : x
  2. Step 2: Convert to fraction form
    719,027.94/992,279.34 = 396,758.79/x
  3. Step 3: Cross multiply
    719,027.94x = 992,279.34 × 396,758.79
  4. Step 4: Simplify right side
    719,027.94x = 393,695,550,280.40
  5. Step 5: Solve for x
    x = 393,695,550,280.40/719,027.94
  6. Step 6: Final answer
    x = 547,538.60

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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.