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Finding the Fourth Proportional to 768,552.10, 1,152,870.17 and 319,318.37

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Solution

The fourth proportional to 768,552.10, 1,152,870.17 and 319,318.37 is: 478,995.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,552.10 : 1,152,870.17 = 319,318.37 : x
  2. Step 2: Convert to fraction form
    768,552.10/1,152,870.17 = 319,318.37/x
  3. Step 3: Cross multiply
    768,552.10x = 1,152,870.17 × 319,318.37
  4. Step 4: Simplify right side
    768,552.10x = 368,132,620,468.34
  5. Step 5: Solve for x
    x = 368,132,620,468.34/768,552.10
  6. Step 6: Final answer
    x = 478,995.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.