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Finding the Fourth Proportional to 684,835.46, 945,060.46 and 378,911.82

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Solution

The fourth proportional to 684,835.46, 945,060.46 and 378,911.82 is: 522,891.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,835.46 : 945,060.46 = 378,911.82 : x
  2. Step 2: Convert to fraction form
    684,835.46/945,060.46 = 378,911.82/x
  3. Step 3: Cross multiply
    684,835.46x = 945,060.46 × 378,911.82
  4. Step 4: Simplify right side
    684,835.46x = 358,094,578,908.64
  5. Step 5: Solve for x
    x = 358,094,578,908.64/684,835.46
  6. Step 6: Final answer
    x = 522,891.41

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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.