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Finding the Fourth Proportional to 906,886.80, 1,361,642.40 and 683,812.80

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Solution

The fourth proportional to 906,886.80, 1,361,642.40 and 683,812.80 is: 1,026,708.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,886.80 : 1,361,642.40 = 683,812.80 : x
  2. Step 2: Convert to fraction form
    906,886.80/1,361,642.40 = 683,812.80/x
  3. Step 3: Cross multiply
    906,886.80x = 1,361,642.40 × 683,812.80
  4. Step 4: Simplify right side
    906,886.80x = 931,108,502,142.72
  5. Step 5: Solve for x
    x = 931,108,502,142.72/906,886.80
  6. Step 6: Final answer
    x = 1,026,708.63

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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.