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Finding the Fourth Proportional to 906,374.40, 1,359,518.40 and 307,276.80

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Solution

The fourth proportional to 906,374.40, 1,359,518.40 and 307,276.80 is: 460,900.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,374.40 : 1,359,518.40 = 307,276.80 : x
  2. Step 2: Convert to fraction form
    906,374.40/1,359,518.40 = 307,276.80/x
  3. Step 3: Cross multiply
    906,374.40x = 1,359,518.40 × 307,276.80
  4. Step 4: Simplify right side
    906,374.40x = 417,748,463,493.12
  5. Step 5: Solve for x
    x = 417,748,463,493.12/906,374.40
  6. Step 6: Final answer
    x = 460,900.55

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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.