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Finding the Fourth Proportional to 1,202,914.60, 1,803,806.88 and 697,619.20

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Solution

The fourth proportional to 1,202,914.60, 1,803,806.88 and 697,619.20 is: 1,046,101.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,202,914.60 : 1,803,806.88 = 697,619.20 : x
  2. Step 2: Convert to fraction form
    1,202,914.60/1,803,806.88 = 697,619.20/x
  3. Step 3: Cross multiply
    1,202,914.60x = 1,803,806.88 × 697,619.20
  4. Step 4: Simplify right side
    1,202,914.60x = 1,258,370,312,580.10
  5. Step 5: Solve for x
    x = 1,258,370,312,580.10/1,202,914.60
  6. Step 6: Final answer
    x = 1,046,101.12

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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.