Home / 486,135.20-727,647.60-448,810.40

Finding the Fourth Proportional to 486,135.20, 727,647.60 and 448,810.40

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Solution

The fourth proportional to 486,135.20, 727,647.60 and 448,810.40 is: 671,779.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,135.20 : 727,647.60 = 448,810.40 : x
  2. Step 2: Convert to fraction form
    486,135.20/727,647.60 = 448,810.40/x
  3. Step 3: Cross multiply
    486,135.20x = 727,647.60 × 448,810.40
  4. Step 4: Simplify right side
    486,135.20x = 326,575,810,415.04
  5. Step 5: Solve for x
    x = 326,575,810,415.04/486,135.20
  6. Step 6: Final answer
    x = 671,779.81

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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.