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Finding the Fourth Proportional to 908,492.80, 1,362,739.20 and 766,775.20

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Solution

The fourth proportional to 908,492.80, 1,362,739.20 and 766,775.20 is: 1,150,162.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,492.80 : 1,362,739.20 = 766,775.20 : x
  2. Step 2: Convert to fraction form
    908,492.80/1,362,739.20 = 766,775.20/x
  3. Step 3: Cross multiply
    908,492.80x = 1,362,739.20 × 766,775.20
  4. Step 4: Simplify right side
    908,492.80x = 1,044,914,622,627.84
  5. Step 5: Solve for x
    x = 1,044,914,622,627.84/908,492.80
  6. Step 6: Final answer
    x = 1,150,162.80

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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.