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Finding the Fourth Proportional to 476,740.80, 714,074.40 and 289,425.60

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Solution

The fourth proportional to 476,740.80, 714,074.40 and 289,425.60 is: 433,508.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,740.80 : 714,074.40 = 289,425.60 : x
  2. Step 2: Convert to fraction form
    476,740.80/714,074.40 = 289,425.60/x
  3. Step 3: Cross multiply
    476,740.80x = 714,074.40 × 289,425.60
  4. Step 4: Simplify right side
    476,740.80x = 206,671,411,664.64
  5. Step 5: Solve for x
    x = 206,671,411,664.64/476,740.80
  6. Step 6: Final answer
    x = 433,508.97

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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.