Home / 683,946.16-943,816.38-378,006.72

Finding the Fourth Proportional to 683,946.16, 943,816.38 and 378,006.72

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Solution

The fourth proportional to 683,946.16, 943,816.38 and 378,006.72 is: 521,633.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,946.16 : 943,816.38 = 378,006.72 : x
  2. Step 2: Convert to fraction form
    683,946.16/943,816.38 = 378,006.72/x
  3. Step 3: Cross multiply
    683,946.16x = 943,816.38 × 378,006.72
  4. Step 4: Simplify right side
    683,946.16x = 356,768,934,086.07
  5. Step 5: Solve for x
    x = 356,768,934,086.07/683,946.16
  6. Step 6: Final answer
    x = 521,633.07

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Double scale
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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.