Home / 919,178.20-1,265,853.18-664,125.40

Finding the Fourth Proportional to 919,178.20, 1,265,853.18 and 664,125.40

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Solution

The fourth proportional to 919,178.20, 1,265,853.18 and 664,125.40 is: 914,605.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,178.20 : 1,265,853.18 = 664,125.40 : x
  2. Step 2: Convert to fraction form
    919,178.20/1,265,853.18 = 664,125.40/x
  3. Step 3: Cross multiply
    919,178.20x = 1,265,853.18 × 664,125.40
  4. Step 4: Simplify right side
    919,178.20x = 840,685,249,508.77
  5. Step 5: Solve for x
    x = 840,685,249,508.77/919,178.20
  6. Step 6: Final answer
    x = 914,605.30

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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.