Home / 1,211,332.40-1,818,748.20-913,900.40

Finding the Fourth Proportional to 1,211,332.40, 1,818,748.20 and 913,900.40

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Solution

The fourth proportional to 1,211,332.40, 1,818,748.20 and 913,900.40 is: 1,372,170.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,332.40 : 1,818,748.20 = 913,900.40 : x
  2. Step 2: Convert to fraction form
    1,211,332.40/1,818,748.20 = 913,900.40/x
  3. Step 3: Cross multiply
    1,211,332.40x = 1,818,748.20 × 913,900.40
  4. Step 4: Simplify right side
    1,211,332.40x = 1,662,154,707,479.28
  5. Step 5: Solve for x
    x = 1,662,154,707,479.28/1,211,332.40
  6. Step 6: Final answer
    x = 1,372,170.60

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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.