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Finding the Fourth Proportional to 663,707.54, 915,995.06 and 377,270.69

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Solution

The fourth proportional to 663,707.54, 915,995.06 and 377,270.69 is: 520,678.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,707.54 : 915,995.06 = 377,270.69 : x
  2. Step 2: Convert to fraction form
    663,707.54/915,995.06 = 377,270.69/x
  3. Step 3: Cross multiply
    663,707.54x = 915,995.06 × 377,270.69
  4. Step 4: Simplify right side
    663,707.54x = 345,578,081,856.46
  5. Step 5: Solve for x
    x = 345,578,081,856.46/663,707.54
  6. Step 6: Final answer
    x = 520,678.26

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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.