Home / 763,603.80-1,144,652.40-426,805.80

Finding the Fourth Proportional to 763,603.80, 1,144,652.40 and 426,805.80

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Solution

The fourth proportional to 763,603.80, 1,144,652.40 and 426,805.80 is: 639,787.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,603.80 : 1,144,652.40 = 426,805.80 : x
  2. Step 2: Convert to fraction form
    763,603.80/1,144,652.40 = 426,805.80/x
  3. Step 3: Cross multiply
    763,603.80x = 1,144,652.40 × 426,805.80
  4. Step 4: Simplify right side
    763,603.80x = 488,544,283,303.92
  5. Step 5: Solve for x
    x = 488,544,283,303.92/763,603.80
  6. Step 6: Final answer
    x = 639,787.65

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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.