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Finding the Fourth Proportional to 891,646.82, 1,230,472.69 and 509,681.94

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Solution

The fourth proportional to 891,646.82, 1,230,472.69 and 509,681.94 is: 703,361.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,646.82 : 1,230,472.69 = 509,681.94 : x
  2. Step 2: Convert to fraction form
    891,646.82/1,230,472.69 = 509,681.94/x
  3. Step 3: Cross multiply
    891,646.82x = 1,230,472.69 × 509,681.94
  4. Step 4: Simplify right side
    891,646.82x = 627,149,707,756.22
  5. Step 5: Solve for x
    x = 627,149,707,756.22/891,646.82
  6. Step 6: Final answer
    x = 703,361.12

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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.