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Finding the Fourth Proportional to 906,920.80, 1,360,323.60 and 307,880.80

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Solution

The fourth proportional to 906,920.80, 1,360,323.60 and 307,880.80 is: 461,801.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,920.80 : 1,360,323.60 = 307,880.80 : x
  2. Step 2: Convert to fraction form
    906,920.80/1,360,323.60 = 307,880.80/x
  3. Step 3: Cross multiply
    906,920.80x = 1,360,323.60 × 307,880.80
  4. Step 4: Simplify right side
    906,920.80x = 418,817,518,226.88
  5. Step 5: Solve for x
    x = 418,817,518,226.88/906,920.80
  6. Step 6: Final answer
    x = 461,801.65

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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.