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Finding the Fourth Proportional to 662,780.93, 914,643.78 and 376,307.15

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Solution

The fourth proportional to 662,780.93, 914,643.78 and 376,307.15 is: 519,307.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,780.93 : 914,643.78 = 376,307.15 : x
  2. Step 2: Convert to fraction form
    662,780.93/914,643.78 = 376,307.15/x
  3. Step 3: Cross multiply
    662,780.93x = 914,643.78 × 376,307.15
  4. Step 4: Simplify right side
    662,780.93x = 344,186,994,117.03
  5. Step 5: Solve for x
    x = 344,186,994,117.03/662,780.93
  6. Step 6: Final answer
    x = 519,307.33

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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.