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Finding the Fourth Proportional to 684,575.13, 944,709.44 and 378,646.03

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Solution

The fourth proportional to 684,575.13, 944,709.44 and 378,646.03 is: 522,529.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,575.13 : 944,709.44 = 378,646.03 : x
  2. Step 2: Convert to fraction form
    684,575.13/944,709.44 = 378,646.03/x
  3. Step 3: Cross multiply
    684,575.13x = 944,709.44 × 378,646.03
  4. Step 4: Simplify right side
    684,575.13x = 357,710,478,959.52
  5. Step 5: Solve for x
    x = 357,710,478,959.52/684,575.13
  6. Step 6: Final answer
    x = 522,529.18

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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.