Home / 913,069.45-1,260,439.40-545,676.19

Finding the Fourth Proportional to 913,069.45, 1,260,439.40 and 545,676.19

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Solution

The fourth proportional to 913,069.45, 1,260,439.40 and 545,676.19 is: 753,274.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,069.45 : 1,260,439.40 = 545,676.19 : x
  2. Step 2: Convert to fraction form
    913,069.45/1,260,439.40 = 545,676.19/x
  3. Step 3: Cross multiply
    913,069.45x = 1,260,439.40 × 545,676.19
  4. Step 4: Simplify right side
    913,069.45x = 687,791,769,517.89
  5. Step 5: Solve for x
    x = 687,791,769,517.89/913,069.45
  6. Step 6: Final answer
    x = 753,274.32

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Double scale
Find fourth proportional to 913,070.45, 1,260,440.78 and 545,677.19
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1.5x scale

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.