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Finding the Fourth Proportional to 626,376.80, 864,395.60 and 339,889.52

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Solution

The fourth proportional to 626,376.80, 864,395.60 and 339,889.52 is: 469,045.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,376.80 : 864,395.60 = 339,889.52 : x
  2. Step 2: Convert to fraction form
    626,376.80/864,395.60 = 339,889.52/x
  3. Step 3: Cross multiply
    626,376.80x = 864,395.60 × 339,889.52
  4. Step 4: Simplify right side
    626,376.80x = 293,799,005,574.11
  5. Step 5: Solve for x
    x = 293,799,005,574.11/626,376.80
  6. Step 6: Final answer
    x = 469,045.16

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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.