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Finding the Fourth Proportional to 684,620.58, 944,703.67 and 378,648.35

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Solution

The fourth proportional to 684,620.58, 944,703.67 and 378,648.35 is: 522,494.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,620.58 : 944,703.67 = 378,648.35 : x
  2. Step 2: Convert to fraction form
    684,620.58/944,703.67 = 378,648.35/x
  3. Step 3: Cross multiply
    684,620.58x = 944,703.67 × 378,648.35
  4. Step 4: Simplify right side
    684,620.58x = 357,710,485,884.45
  5. Step 5: Solve for x
    x = 357,710,485,884.45/684,620.58
  6. Step 6: Final answer
    x = 522,494.50

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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.