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Finding the Fourth Proportional to 646,118.09, 891,642.89 and 359,632.02

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Solution

The fourth proportional to 646,118.09, 891,642.89 and 359,632.02 is: 496,292.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,118.09 : 891,642.89 = 359,632.02 : x
  2. Step 2: Convert to fraction form
    646,118.09/891,642.89 = 359,632.02/x
  3. Step 3: Cross multiply
    646,118.09x = 891,642.89 × 359,632.02
  4. Step 4: Simplify right side
    646,118.09x = 320,663,331,851.18
  5. Step 5: Solve for x
    x = 320,663,331,851.18/646,118.09
  6. Step 6: Final answer
    x = 496,292.15

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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.