Home / 1,105,360.40-1,658,040.60-769,437.20

Finding the Fourth Proportional to 1,105,360.40, 1,658,040.60 and 769,437.20

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Solution

The fourth proportional to 1,105,360.40, 1,658,040.60 and 769,437.20 is: 1,154,155.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105,360.40 : 1,658,040.60 = 769,437.20 : x
  2. Step 2: Convert to fraction form
    1,105,360.40/1,658,040.60 = 769,437.20/x
  3. Step 3: Cross multiply
    1,105,360.40x = 1,658,040.60 × 769,437.20
  4. Step 4: Simplify right side
    1,105,360.40x = 1,275,758,116,750.32
  5. Step 5: Solve for x
    x = 1,275,758,116,750.32/1,105,360.40
  6. Step 6: Final answer
    x = 1,154,155.80

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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.