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Finding the Fourth Proportional to 867,998.40, 1,301,997.60 and 369,297.60

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Solution

The fourth proportional to 867,998.40, 1,301,997.60 and 369,297.60 is: 553,946.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,998.40 : 1,301,997.60 = 369,297.60 : x
  2. Step 2: Convert to fraction form
    867,998.40/1,301,997.60 = 369,297.60/x
  3. Step 3: Cross multiply
    867,998.40x = 1,301,997.60 × 369,297.60
  4. Step 4: Simplify right side
    867,998.40x = 480,824,588,885.76
  5. Step 5: Solve for x
    x = 480,824,588,885.76/867,998.40
  6. Step 6: Final answer
    x = 553,946.40

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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.