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Finding the Fourth Proportional to 646,344.90, 891,955.98 and 374,465.34

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Solution

The fourth proportional to 646,344.90, 891,955.98 and 374,465.34 is: 516,762.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,344.90 : 891,955.98 = 374,465.34 : x
  2. Step 2: Convert to fraction form
    646,344.90/891,955.98 = 374,465.34/x
  3. Step 3: Cross multiply
    646,344.90x = 891,955.98 × 374,465.34
  4. Step 4: Simplify right side
    646,344.90x = 334,006,599,315.73
  5. Step 5: Solve for x
    x = 334,006,599,315.73/646,344.90
  6. Step 6: Final answer
    x = 516,762.18

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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.