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Finding the Fourth Proportional to 476,540.40, 714,810.60 and 455,545.20

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Solution

The fourth proportional to 476,540.40, 714,810.60 and 455,545.20 is: 683,317.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,540.40 : 714,810.60 = 455,545.20 : x
  2. Step 2: Convert to fraction form
    476,540.40/714,810.60 = 455,545.20/x
  3. Step 3: Cross multiply
    476,540.40x = 714,810.60 × 455,545.20
  4. Step 4: Simplify right side
    476,540.40x = 325,628,537,739.12
  5. Step 5: Solve for x
    x = 325,628,537,739.12/476,540.40
  6. Step 6: Final answer
    x = 683,317.80

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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.