Home / 645,938.70-968,908.05-616,908.30

Finding the Fourth Proportional to 645,938.70, 968,908.05 and 616,908.30

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Solution

The fourth proportional to 645,938.70, 968,908.05 and 616,908.30 is: 925,362.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,938.70 : 968,908.05 = 616,908.30 : x
  2. Step 2: Convert to fraction form
    645,938.70/968,908.05 = 616,908.30/x
  3. Step 3: Cross multiply
    645,938.70x = 968,908.05 × 616,908.30
  4. Step 4: Simplify right side
    645,938.70x = 597,727,417,981.82
  5. Step 5: Solve for x
    x = 597,727,417,981.82/645,938.70
  6. Step 6: Final answer
    x = 925,362.45

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Half scale
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Double scale
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Similar ratio
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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.