Home / 878,459.01-1,317,688.51-279,420.27

Finding the Fourth Proportional to 878,459.01, 1,317,688.51 and 279,420.27

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Solution

The fourth proportional to 878,459.01, 1,317,688.51 and 279,420.27 is: 419,130.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,459.01 : 1,317,688.51 = 279,420.27 : x
  2. Step 2: Convert to fraction form
    878,459.01/1,317,688.51 = 279,420.27/x
  3. Step 3: Cross multiply
    878,459.01x = 1,317,688.51 × 279,420.27
  4. Step 4: Simplify right side
    878,459.01x = 368,188,872,651.66
  5. Step 5: Solve for x
    x = 368,188,872,651.66/878,459.01
  6. Step 6: Final answer
    x = 419,130.40

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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.