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Finding the Fourth Proportional to 868,802.40, 1,303,203.60 and 307,893.60

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Solution

The fourth proportional to 868,802.40, 1,303,203.60 and 307,893.60 is: 461,840.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,802.40 : 1,303,203.60 = 307,893.60 : x
  2. Step 2: Convert to fraction form
    868,802.40/1,303,203.60 = 307,893.60/x
  3. Step 3: Cross multiply
    868,802.40x = 1,303,203.60 × 307,893.60
  4. Step 4: Simplify right side
    868,802.40x = 401,248,047,936.96
  5. Step 5: Solve for x
    x = 401,248,047,936.96/868,802.40
  6. Step 6: Final answer
    x = 461,840.40

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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.