Home / 1,020,243.20-1,530,305.76-389,220.80

Finding the Fourth Proportional to 1,020,243.20, 1,530,305.76 and 389,220.80

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Solution

The fourth proportional to 1,020,243.20, 1,530,305.76 and 389,220.80 is: 583,808.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,243.20 : 1,530,305.76 = 389,220.80 : x
  2. Step 2: Convert to fraction form
    1,020,243.20/1,530,305.76 = 389,220.80/x
  3. Step 3: Cross multiply
    1,020,243.20x = 1,530,305.76 × 389,220.80
  4. Step 4: Simplify right side
    1,020,243.20x = 595,626,832,151.81
  5. Step 5: Solve for x
    x = 595,626,832,151.81/1,020,243.20
  6. Step 6: Final answer
    x = 583,808.68

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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.