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Finding the Fourth Proportional to 907,713.10, 1,364,522.10 and 643,304.80

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Solution

The fourth proportional to 907,713.10, 1,364,522.10 and 643,304.80 is: 967,049.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,713.10 : 1,364,522.10 = 643,304.80 : x
  2. Step 2: Convert to fraction form
    907,713.10/1,364,522.10 = 643,304.80/x
  3. Step 3: Cross multiply
    907,713.10x = 1,364,522.10 × 643,304.80
  4. Step 4: Simplify right side
    907,713.10x = 877,803,616,636.08
  5. Step 5: Solve for x
    x = 877,803,616,636.08/907,713.10
  6. Step 6: Final answer
    x = 967,049.63

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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.