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Finding the Fourth Proportional to 510,689.80, 769,858.99 and 476,436.52

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Solution

The fourth proportional to 510,689.80, 769,858.99 and 476,436.52 is: 718,222.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,689.80 : 769,858.99 = 476,436.52 : x
  2. Step 2: Convert to fraction form
    510,689.80/769,858.99 = 476,436.52/x
  3. Step 3: Cross multiply
    510,689.80x = 769,858.99 × 476,436.52
  4. Step 4: Simplify right side
    510,689.80x = 366,788,938,086.32
  5. Step 5: Solve for x
    x = 366,788,938,086.32/510,689.80
  6. Step 6: Final answer
    x = 718,222.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.