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Finding the Fourth Proportional to 646,341.69, 891,957.68 and 359,867.93

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Solution

The fourth proportional to 646,341.69, 891,957.68 and 359,867.93 is: 496,621.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,341.69 : 891,957.68 = 359,867.93 : x
  2. Step 2: Convert to fraction form
    646,341.69/891,957.68 = 359,867.93/x
  3. Step 3: Cross multiply
    646,341.69x = 891,957.68 × 359,867.93
  4. Step 4: Simplify right side
    646,341.69x = 320,986,959,489.41
  5. Step 5: Solve for x
    x = 320,986,959,489.41/646,341.69
  6. Step 6: Final answer
    x = 496,621.16

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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.