Home / 1,290,937.40-1,781,516.50-717,977.84

Finding the Fourth Proportional to 1,290,937.40, 1,781,516.50 and 717,977.84

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Solution

The fourth proportional to 1,290,937.40, 1,781,516.50 and 717,977.84 is: 990,822.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,937.40 : 1,781,516.50 = 717,977.84 : x
  2. Step 2: Convert to fraction form
    1,290,937.40/1,781,516.50 = 717,977.84/x
  3. Step 3: Cross multiply
    1,290,937.40x = 1,781,516.50 × 717,977.84
  4. Step 4: Simplify right side
    1,290,937.40x = 1,279,089,368,594.36
  5. Step 5: Solve for x
    x = 1,279,089,368,594.36/1,290,937.40
  6. Step 6: Final answer
    x = 990,822.15

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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.