Home / 645,943.18-968,263.43-406,228.39

Finding the Fourth Proportional to 645,943.18, 968,263.43 and 406,228.39

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Solution

The fourth proportional to 645,943.18, 968,263.43 and 406,228.39 is: 608,932.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,943.18 : 968,263.43 = 406,228.39 : x
  2. Step 2: Convert to fraction form
    645,943.18/968,263.43 = 406,228.39/x
  3. Step 3: Cross multiply
    645,943.18x = 968,263.43 × 406,228.39
  4. Step 4: Simplify right side
    645,943.18x = 393,336,094,264.78
  5. Step 5: Solve for x
    x = 393,336,094,264.78/645,943.18
  6. Step 6: Final answer
    x = 608,932.96

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Double scale
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1.5x scale

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.