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Finding the Fourth Proportional to 496,864.80, 745,297.20 and 328,903.20

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Solution

The fourth proportional to 496,864.80, 745,297.20 and 328,903.20 is: 493,354.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,864.80 : 745,297.20 = 328,903.20 : x
  2. Step 2: Convert to fraction form
    496,864.80/745,297.20 = 328,903.20/x
  3. Step 3: Cross multiply
    496,864.80x = 745,297.20 × 328,903.20
  4. Step 4: Simplify right side
    496,864.80x = 245,130,634,031.04
  5. Step 5: Solve for x
    x = 245,130,634,031.04/496,864.80
  6. Step 6: Final answer
    x = 493,354.80

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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.