Home / 646,921.40-970,382.10-470,665.40

Finding the Fourth Proportional to 646,921.40, 970,382.10 and 470,665.40

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Solution

The fourth proportional to 646,921.40, 970,382.10 and 470,665.40 is: 705,998.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,921.40 : 970,382.10 = 470,665.40 : x
  2. Step 2: Convert to fraction form
    646,921.40/970,382.10 = 470,665.40/x
  3. Step 3: Cross multiply
    646,921.40x = 970,382.10 × 470,665.40
  4. Step 4: Simplify right side
    646,921.40x = 456,725,279,249.34
  5. Step 5: Solve for x
    x = 456,725,279,249.34/646,921.40
  6. Step 6: Final answer
    x = 705,998.10

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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.