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Finding the Fourth Proportional to 891,625.88, 1,230,443.59 and 509,660.87

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Solution

The fourth proportional to 891,625.88, 1,230,443.59 and 509,660.87 is: 703,331.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,625.88 : 1,230,443.59 = 509,660.87 : x
  2. Step 2: Convert to fraction form
    891,625.88/1,230,443.59 = 509,660.87/x
  3. Step 3: Cross multiply
    891,625.88x = 1,230,443.59 × 509,660.87
  4. Step 4: Simplify right side
    891,625.88x = 627,108,943,138.95
  5. Step 5: Solve for x
    x = 627,108,943,138.95/891,625.88
  6. Step 6: Final answer
    x = 703,331.93

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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.