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Finding the Fourth Proportional to 684,362.79, 944,426.77 and 378,459.75

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Solution

The fourth proportional to 684,362.79, 944,426.77 and 378,459.75 is: 522,277.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,362.79 : 944,426.77 = 378,459.75 : x
  2. Step 2: Convert to fraction form
    684,362.79/944,426.77 = 378,459.75/x
  3. Step 3: Cross multiply
    684,362.79x = 944,426.77 × 378,459.75
  4. Step 4: Simplify right side
    684,362.79x = 357,427,523,282.18
  5. Step 5: Solve for x
    x = 357,427,523,282.18/684,362.79
  6. Step 6: Final answer
    x = 522,277.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.