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Finding the Fourth Proportional to 684,364.40, 944,428.98 and 378,461.37

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Solution

The fourth proportional to 684,364.40, 944,428.98 and 378,461.37 is: 522,280.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,364.40 : 944,428.98 = 378,461.37 : x
  2. Step 2: Convert to fraction form
    684,364.40/944,428.98 = 378,461.37/x
  3. Step 3: Cross multiply
    684,364.40x = 944,428.98 × 378,461.37
  4. Step 4: Simplify right side
    684,364.40x = 357,429,885,286.93
  5. Step 5: Solve for x
    x = 357,429,885,286.93/684,364.40
  6. Step 6: Final answer
    x = 522,280.07

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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.