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Finding the Fourth Proportional to 908,569.80, 1,361,323.80 and 718,300.80

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Solution

The fourth proportional to 908,569.80, 1,361,323.80 and 718,300.80 is: 1,076,240.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,569.80 : 1,361,323.80 = 718,300.80 : x
  2. Step 2: Convert to fraction form
    908,569.80/1,361,323.80 = 718,300.80/x
  3. Step 3: Cross multiply
    908,569.80x = 1,361,323.80 × 718,300.80
  4. Step 4: Simplify right side
    908,569.80x = 977,839,974,599.04
  5. Step 5: Solve for x
    x = 977,839,974,599.04/908,569.80
  6. Step 6: Final answer
    x = 1,076,240.89

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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.