Home / 1,499,378.40-2,069,115.66-918,511.20

Finding the Fourth Proportional to 1,499,378.40, 2,069,115.66 and 918,511.20

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Solution

The fourth proportional to 1,499,378.40, 2,069,115.66 and 918,511.20 is: 1,267,529.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,499,378.40 : 2,069,115.66 = 918,511.20 : x
  2. Step 2: Convert to fraction form
    1,499,378.40/2,069,115.66 = 918,511.20/x
  3. Step 3: Cross multiply
    1,499,378.40x = 2,069,115.66 × 918,511.20
  4. Step 4: Simplify right side
    1,499,378.40x = 1,900,505,907,805.39
  5. Step 5: Solve for x
    x = 1,900,505,907,805.39/1,499,378.40
  6. Step 6: Final answer
    x = 1,267,529.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.