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Finding the Fourth Proportional to 626,395.15, 864,427.65 and 339,915.29

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Solution

The fourth proportional to 626,395.15, 864,427.65 and 339,915.29 is: 469,084.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,395.15 : 864,427.65 = 339,915.29 : x
  2. Step 2: Convert to fraction form
    626,395.15/864,427.65 = 339,915.29/x
  3. Step 3: Cross multiply
    626,395.15x = 864,427.65 × 339,915.29
  4. Step 4: Simplify right side
    626,395.15x = 293,832,175,333.77
  5. Step 5: Solve for x
    x = 293,832,175,333.77/626,395.15
  6. Step 6: Final answer
    x = 469,084.38

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1.5x scale

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.