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Finding the Fourth Proportional to 684,370.89, 944,437.91 and 378,467.82

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Solution

The fourth proportional to 684,370.89, 944,437.91 and 378,467.82 is: 522,288.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,370.89 : 944,437.91 = 378,467.82 : x
  2. Step 2: Convert to fraction form
    684,370.89/944,437.91 = 378,467.82/x
  3. Step 3: Cross multiply
    684,370.89x = 944,437.91 × 378,467.82
  4. Step 4: Simplify right side
    684,370.89x = 357,439,355,030.72
  5. Step 5: Solve for x
    x = 357,439,355,030.72/684,370.89
  6. Step 6: Final answer
    x = 522,288.95

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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.