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Finding the Fourth Proportional to 906,892.80, 1,360,390.40 and 275,827.20

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Solution

The fourth proportional to 906,892.80, 1,360,390.40 and 275,827.20 is: 413,756.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,892.80 : 1,360,390.40 = 275,827.20 : x
  2. Step 2: Convert to fraction form
    906,892.80/1,360,390.40 = 275,827.20/x
  3. Step 3: Cross multiply
    906,892.80x = 1,360,390.40 × 275,827.20
  4. Step 4: Simplify right side
    906,892.80x = 375,232,674,938.88
  5. Step 5: Solve for x
    x = 375,232,674,938.88/906,892.80
  6. Step 6: Final answer
    x = 413,756.37

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1.5x scale

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.