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Finding the Fourth Proportional to 604,980.80, 905,191.12 and 360,919.30

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Solution

The fourth proportional to 604,980.80, 905,191.12 and 360,919.30 is: 540,018.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,980.80 : 905,191.12 = 360,919.30 : x
  2. Step 2: Convert to fraction form
    604,980.80/905,191.12 = 360,919.30/x
  3. Step 3: Cross multiply
    604,980.80x = 905,191.12 × 360,919.30
  4. Step 4: Simplify right side
    604,980.80x = 326,700,939,066.06
  5. Step 5: Solve for x
    x = 326,700,939,066.06/604,980.80
  6. Step 6: Final answer
    x = 540,018.69

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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.