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Finding the Fourth Proportional to 578,499.67, 798,329.55 and 352,145.17

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Solution

The fourth proportional to 578,499.67, 798,329.55 and 352,145.17 is: 485,960.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,499.67 : 798,329.55 = 352,145.17 : x
  2. Step 2: Convert to fraction form
    578,499.67/798,329.55 = 352,145.17/x
  3. Step 3: Cross multiply
    578,499.67x = 798,329.55 × 352,145.17
  4. Step 4: Simplify right side
    578,499.67x = 281,127,895,100.77
  5. Step 5: Solve for x
    x = 281,127,895,100.77/578,499.67
  6. Step 6: Final answer
    x = 485,960.34

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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.