Home / 1,038,128.80-1,557,193.20-828,176.80

Finding the Fourth Proportional to 1,038,128.80, 1,557,193.20 and 828,176.80

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Solution

The fourth proportional to 1,038,128.80, 1,557,193.20 and 828,176.80 is: 1,242,265.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,128.80 : 1,557,193.20 = 828,176.80 : x
  2. Step 2: Convert to fraction form
    1,038,128.80/1,557,193.20 = 828,176.80/x
  3. Step 3: Cross multiply
    1,038,128.80x = 1,557,193.20 × 828,176.80
  4. Step 4: Simplify right side
    1,038,128.80x = 1,289,631,281,357.76
  5. Step 5: Solve for x
    x = 1,289,631,281,357.76/1,038,128.80
  6. Step 6: Final answer
    x = 1,242,265.20

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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.