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Finding the Fourth Proportional to 722,189.93, 997,660.13 and 576,804.78

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Solution

The fourth proportional to 722,189.93, 997,660.13 and 576,804.78 is: 796,819.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,189.93 : 997,660.13 = 576,804.78 : x
  2. Step 2: Convert to fraction form
    722,189.93/997,660.13 = 576,804.78/x
  3. Step 3: Cross multiply
    722,189.93x = 997,660.13 × 576,804.78
  4. Step 4: Simplify right side
    722,189.93x = 575,455,128,915.40
  5. Step 5: Solve for x
    x = 575,455,128,915.40/722,189.93
  6. Step 6: Final answer
    x = 796,819.66

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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.