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Finding the Fourth Proportional to 867,802.60, 1,301,703.90 and 615,860.20

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Solution

The fourth proportional to 867,802.60, 1,301,703.90 and 615,860.20 is: 923,790.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,802.60 : 1,301,703.90 = 615,860.20 : x
  2. Step 2: Convert to fraction form
    867,802.60/1,301,703.90 = 615,860.20/x
  3. Step 3: Cross multiply
    867,802.60x = 1,301,703.90 × 615,860.20
  4. Step 4: Simplify right side
    867,802.60x = 801,667,624,194.78
  5. Step 5: Solve for x
    x = 801,667,624,194.78/867,802.60
  6. Step 6: Final answer
    x = 923,790.30

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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.