Home / 869,280.30-1,303,920.45-550,415.70

Finding the Fourth Proportional to 869,280.30, 1,303,920.45 and 550,415.70

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Solution

The fourth proportional to 869,280.30, 1,303,920.45 and 550,415.70 is: 825,623.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,280.30 : 1,303,920.45 = 550,415.70 : x
  2. Step 2: Convert to fraction form
    869,280.30/1,303,920.45 = 550,415.70/x
  3. Step 3: Cross multiply
    869,280.30x = 1,303,920.45 × 550,415.70
  4. Step 4: Simplify right side
    869,280.30x = 717,698,287,231.07
  5. Step 5: Solve for x
    x = 717,698,287,231.07/869,280.30
  6. Step 6: Final answer
    x = 825,623.55

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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.