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Finding the Fourth Proportional to 403,454.80, 604,145.40 and 297,701.20

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Solution

The fourth proportional to 403,454.80, 604,145.40 and 297,701.20 is: 445,786.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,454.80 : 604,145.40 = 297,701.20 : x
  2. Step 2: Convert to fraction form
    403,454.80/604,145.40 = 297,701.20/x
  3. Step 3: Cross multiply
    403,454.80x = 604,145.40 × 297,701.20
  4. Step 4: Simplify right side
    403,454.80x = 179,854,810,554.48
  5. Step 5: Solve for x
    x = 179,854,810,554.48/403,454.80
  6. Step 6: Final answer
    x = 445,786.77

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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.