Home / 915,633.80-1,374,106.80-515,850.20

Finding the Fourth Proportional to 915,633.80, 1,374,106.80 and 515,850.20

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Solution

The fourth proportional to 915,633.80, 1,374,106.80 and 515,850.20 is: 774,144.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,633.80 : 1,374,106.80 = 515,850.20 : x
  2. Step 2: Convert to fraction form
    915,633.80/1,374,106.80 = 515,850.20/x
  3. Step 3: Cross multiply
    915,633.80x = 1,374,106.80 × 515,850.20
  4. Step 4: Simplify right side
    915,633.80x = 708,833,267,601.36
  5. Step 5: Solve for x
    x = 708,833,267,601.36/915,633.80
  6. Step 6: Final answer
    x = 774,144.93

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1.5x scale

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.