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Finding the Fourth Proportional to 702,616.88, 969,742.65 and 400,810.88

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Solution

The fourth proportional to 702,616.88, 969,742.65 and 400,810.88 is: 553,193.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,616.88 : 969,742.65 = 400,810.88 : x
  2. Step 2: Convert to fraction form
    702,616.88/969,742.65 = 400,810.88/x
  3. Step 3: Cross multiply
    702,616.88x = 969,742.65 × 400,810.88
  4. Step 4: Simplify right side
    702,616.88x = 388,683,404,920.03
  5. Step 5: Solve for x
    x = 388,683,404,920.03/702,616.88
  6. Step 6: Final answer
    x = 553,193.95

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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.