Home / 621,443.05-857,985.42-425,537.36

Finding the Fourth Proportional to 621,443.05, 857,985.42 and 425,537.36

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Solution

The fourth proportional to 621,443.05, 857,985.42 and 425,537.36 is: 587,511.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,443.05 : 857,985.42 = 425,537.36 : x
  2. Step 2: Convert to fraction form
    621,443.05/857,985.42 = 425,537.36/x
  3. Step 3: Cross multiply
    621,443.05x = 857,985.42 × 425,537.36
  4. Step 4: Simplify right side
    621,443.05x = 365,104,850,545.29
  5. Step 5: Solve for x
    x = 365,104,850,545.29/621,443.05
  6. Step 6: Final answer
    x = 587,511.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.