Home / 1,020,430.80-1,531,229.40-389,797.20

Finding the Fourth Proportional to 1,020,430.80, 1,531,229.40 and 389,797.20

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Solution

The fourth proportional to 1,020,430.80, 1,531,229.40 and 389,797.20 is: 584,918.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,430.80 : 1,531,229.40 = 389,797.20 : x
  2. Step 2: Convert to fraction form
    1,020,430.80/1,531,229.40 = 389,797.20/x
  3. Step 3: Cross multiply
    1,020,430.80x = 1,531,229.40 × 389,797.20
  4. Step 4: Simplify right side
    1,020,430.80x = 596,868,932,677.68
  5. Step 5: Solve for x
    x = 596,868,932,677.68/1,020,430.80
  6. Step 6: Final answer
    x = 584,918.58

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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.