Home / 688,003.40-1,029,963.90-511,293.80

Finding the Fourth Proportional to 688,003.40, 1,029,963.90 and 511,293.80

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Solution

The fourth proportional to 688,003.40, 1,029,963.90 and 511,293.80 is: 765,423.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,003.40 : 1,029,963.90 = 511,293.80 : x
  2. Step 2: Convert to fraction form
    688,003.40/1,029,963.90 = 511,293.80/x
  3. Step 3: Cross multiply
    688,003.40x = 1,029,963.90 × 511,293.80
  4. Step 4: Simplify right side
    688,003.40x = 526,614,156,293.82
  5. Step 5: Solve for x
    x = 526,614,156,293.82/688,003.40
  6. Step 6: Final answer
    x = 765,423.77

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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.