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Finding the Fourth Proportional to 906,579.80, 1,359,869.70 and 808,602.20

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Solution

The fourth proportional to 906,579.80, 1,359,869.70 and 808,602.20 is: 1,212,903.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,579.80 : 1,359,869.70 = 808,602.20 : x
  2. Step 2: Convert to fraction form
    906,579.80/1,359,869.70 = 808,602.20/x
  3. Step 3: Cross multiply
    906,579.80x = 1,359,869.70 × 808,602.20
  4. Step 4: Simplify right side
    906,579.80x = 1,099,593,631,133.34
  5. Step 5: Solve for x
    x = 1,099,593,631,133.34/906,579.80
  6. Step 6: Final answer
    x = 1,212,903.30

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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.