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Finding the Fourth Proportional to 626,578.45, 864,530.02 and 354,646.31

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Solution

The fourth proportional to 626,578.45, 864,530.02 and 354,646.31 is: 489,328.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,578.45 : 864,530.02 = 354,646.31 : x
  2. Step 2: Convert to fraction form
    626,578.45/864,530.02 = 354,646.31/x
  3. Step 3: Cross multiply
    626,578.45x = 864,530.02 × 354,646.31
  4. Step 4: Simplify right side
    626,578.45x = 306,602,378,429.29
  5. Step 5: Solve for x
    x = 306,602,378,429.29/626,578.45
  6. Step 6: Final answer
    x = 489,328.00

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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.