Home / 1,019,909.43-1,530,050.04-420,537.78

Finding the Fourth Proportional to 1,019,909.43, 1,530,050.04 and 420,537.78

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Solution

The fourth proportional to 1,019,909.43, 1,530,050.04 and 420,537.78 is: 630,883.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019,909.43 : 1,530,050.04 = 420,537.78 : x
  2. Step 2: Convert to fraction form
    1,019,909.43/1,530,050.04 = 420,537.78/x
  3. Step 3: Cross multiply
    1,019,909.43x = 1,530,050.04 × 420,537.78
  4. Step 4: Simplify right side
    1,019,909.43x = 643,443,847,110.51
  5. Step 5: Solve for x
    x = 643,443,847,110.51/1,019,909.43
  6. Step 6: Final answer
    x = 630,883.32

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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.