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Finding the Fourth Proportional to 659,391.08, 910,008.57 and 369,031.75

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Solution

The fourth proportional to 659,391.08, 910,008.57 and 369,031.75 is: 509,291.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,391.08 : 910,008.57 = 369,031.75 : x
  2. Step 2: Convert to fraction form
    659,391.08/910,008.57 = 369,031.75/x
  3. Step 3: Cross multiply
    659,391.08x = 910,008.57 × 369,031.75
  4. Step 4: Simplify right side
    659,391.08x = 335,822,054,210.95
  5. Step 5: Solve for x
    x = 335,822,054,210.95/659,391.08
  6. Step 6: Final answer
    x = 509,291.17

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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.