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Finding the Fourth Proportional to 654,600.69, 903,340.35 and 368,120.70

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Solution

The fourth proportional to 654,600.69, 903,340.35 and 368,120.70 is: 508,001.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,600.69 : 903,340.35 = 368,120.70 : x
  2. Step 2: Convert to fraction form
    654,600.69/903,340.35 = 368,120.70/x
  3. Step 3: Cross multiply
    654,600.69x = 903,340.35 × 368,120.70
  4. Step 4: Simplify right side
    654,600.69x = 332,538,281,980.25
  5. Step 5: Solve for x
    x = 332,538,281,980.25/654,600.69
  6. Step 6: Final answer
    x = 508,001.73

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Half scale
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Double scale
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Similar ratio
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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.