Home / 912,999.20-1,369,498.80-864,010.40

Finding the Fourth Proportional to 912,999.20, 1,369,498.80 and 864,010.40

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Solution

The fourth proportional to 912,999.20, 1,369,498.80 and 864,010.40 is: 1,296,015.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,999.20 : 1,369,498.80 = 864,010.40 : x
  2. Step 2: Convert to fraction form
    912,999.20/1,369,498.80 = 864,010.40/x
  3. Step 3: Cross multiply
    912,999.20x = 1,369,498.80 × 864,010.40
  4. Step 4: Simplify right side
    912,999.20x = 1,183,261,205,987.52
  5. Step 5: Solve for x
    x = 1,183,261,205,987.52/912,999.20
  6. Step 6: Final answer
    x = 1,296,015.60

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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.