Home / 688,001.40-1,029,960.90-511,291.80

Finding the Fourth Proportional to 688,001.40, 1,029,960.90 and 511,291.80

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Solution

The fourth proportional to 688,001.40, 1,029,960.90 and 511,291.80 is: 765,420.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,001.40 : 1,029,960.90 = 511,291.80 : x
  2. Step 2: Convert to fraction form
    688,001.40/1,029,960.90 = 511,291.80/x
  3. Step 3: Cross multiply
    688,001.40x = 1,029,960.90 × 511,291.80
  4. Step 4: Simplify right side
    688,001.40x = 526,610,562,490.62
  5. Step 5: Solve for x
    x = 526,610,562,490.62/688,001.40
  6. Step 6: Final answer
    x = 765,420.77

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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.