Home / 688,135.12-1,032,540.84-309,323.50

Finding the Fourth Proportional to 688,135.12, 1,032,540.84 and 309,323.50

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Solution

The fourth proportional to 688,135.12, 1,032,540.84 and 309,323.50 is: 464,137.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,135.12 : 1,032,540.84 = 309,323.50 : x
  2. Step 2: Convert to fraction form
    688,135.12/1,032,540.84 = 309,323.50/x
  3. Step 3: Cross multiply
    688,135.12x = 1,032,540.84 × 309,323.50
  4. Step 4: Simplify right side
    688,135.12x = 319,389,146,521.74
  5. Step 5: Solve for x
    x = 319,389,146,521.74/688,135.12
  6. Step 6: Final answer
    x = 464,137.26

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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.