Home / 1,020,448.80-1,531,256.40-389,815.20

Finding the Fourth Proportional to 1,020,448.80, 1,531,256.40 and 389,815.20

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Solution

The fourth proportional to 1,020,448.80, 1,531,256.40 and 389,815.20 is: 584,945.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,448.80 : 1,531,256.40 = 389,815.20 : x
  2. Step 2: Convert to fraction form
    1,020,448.80/1,531,256.40 = 389,815.20/x
  3. Step 3: Cross multiply
    1,020,448.80x = 1,531,256.40 × 389,815.20
  4. Step 4: Simplify right side
    1,020,448.80x = 596,907,019,817.28
  5. Step 5: Solve for x
    x = 596,907,019,817.28/1,020,448.80
  6. Step 6: Final answer
    x = 584,945.58

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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.