Home / 688,122.36-1,032,521.72-309,310.74

Finding the Fourth Proportional to 688,122.36, 1,032,521.72 and 309,310.74

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Solution

The fourth proportional to 688,122.36, 1,032,521.72 and 309,310.74 is: 464,118.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,122.36 : 1,032,521.72 = 309,310.74 : x
  2. Step 2: Convert to fraction form
    688,122.36/1,032,521.72 = 309,310.74/x
  3. Step 3: Cross multiply
    688,122.36x = 1,032,521.72 × 309,310.74
  4. Step 4: Simplify right side
    688,122.36x = 319,370,055,732.72
  5. Step 5: Solve for x
    x = 319,370,055,732.72/688,122.36
  6. Step 6: Final answer
    x = 464,118.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.