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Finding the Fourth Proportional to 661,110.48, 912,328.08 and 359,304.48

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Solution

The fourth proportional to 661,110.48, 912,328.08 and 359,304.48 is: 495,837.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,110.48 : 912,328.08 = 359,304.48 : x
  2. Step 2: Convert to fraction form
    661,110.48/912,328.08 = 359,304.48/x
  3. Step 3: Cross multiply
    661,110.48x = 912,328.08 × 359,304.48
  4. Step 4: Simplify right side
    661,110.48x = 327,803,566,373.80
  5. Step 5: Solve for x
    x = 327,803,566,373.80/661,110.48
  6. Step 6: Final answer
    x = 495,837.80

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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.