Home / 698,742.51-964,211.63-392,770.23

Finding the Fourth Proportional to 698,742.51, 964,211.63 and 392,770.23

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Solution

The fourth proportional to 698,742.51, 964,211.63 and 392,770.23 is: 541,993.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,742.51 : 964,211.63 = 392,770.23 : x
  2. Step 2: Convert to fraction form
    698,742.51/964,211.63 = 392,770.23/x
  3. Step 3: Cross multiply
    698,742.51x = 964,211.63 × 392,770.23
  4. Step 4: Simplify right side
    698,742.51x = 378,713,621,719.92
  5. Step 5: Solve for x
    x = 378,713,621,719.92/698,742.51
  6. Step 6: Final answer
    x = 541,993.10

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Double scale
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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.