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Finding the Fourth Proportional to 719,015.82, 992,262.59 and 396,746.67

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Solution

The fourth proportional to 719,015.82, 992,262.59 and 396,746.67 is: 547,521.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,015.82 : 992,262.59 = 396,746.67 : x
  2. Step 2: Convert to fraction form
    719,015.82/992,262.59 = 396,746.67/x
  3. Step 3: Cross multiply
    719,015.82x = 992,262.59 × 396,746.67
  4. Step 4: Simplify right side
    719,015.82x = 393,676,878,348.08
  5. Step 5: Solve for x
    x = 393,676,878,348.08/719,015.82
  6. Step 6: Final answer
    x = 547,521.86

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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.