Home / 1,318,388.76-1,819,390.50-774,547.20

Finding the Fourth Proportional to 1,318,388.76, 1,819,390.50 and 774,547.20

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Solution

The fourth proportional to 1,318,388.76, 1,819,390.50 and 774,547.20 is: 1,068,883.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,388.76 : 1,819,390.50 = 774,547.20 : x
  2. Step 2: Convert to fraction form
    1,318,388.76/1,819,390.50 = 774,547.20/x
  3. Step 3: Cross multiply
    1,318,388.76x = 1,819,390.50 × 774,547.20
  4. Step 4: Simplify right side
    1,318,388.76x = 1,409,203,817,481.60
  5. Step 5: Solve for x
    x = 1,409,203,817,481.60/1,318,388.76
  6. Step 6: Final answer
    x = 1,068,883.37

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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.