Home / 784,943.80-1,177,415.70-311,385.40

Finding the Fourth Proportional to 784,943.80, 1,177,415.70 and 311,385.40

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Solution

The fourth proportional to 784,943.80, 1,177,415.70 and 311,385.40 is: 467,078.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,943.80 : 1,177,415.70 = 311,385.40 : x
  2. Step 2: Convert to fraction form
    784,943.80/1,177,415.70 = 311,385.40/x
  3. Step 3: Cross multiply
    784,943.80x = 1,177,415.70 × 311,385.40
  4. Step 4: Simplify right side
    784,943.80x = 366,630,058,710.78
  5. Step 5: Solve for x
    x = 366,630,058,710.78/784,943.80
  6. Step 6: Final answer
    x = 467,078.10

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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.