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Finding the Fourth Proportional to 636,498.24, 878,307.48 and 378,354.48

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Solution

The fourth proportional to 636,498.24, 878,307.48 and 378,354.48 is: 522,093.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,498.24 : 878,307.48 = 378,354.48 : x
  2. Step 2: Convert to fraction form
    636,498.24/878,307.48 = 378,354.48/x
  3. Step 3: Cross multiply
    636,498.24x = 878,307.48 × 378,354.48
  4. Step 4: Simplify right side
    636,498.24x = 332,311,569,875.51
  5. Step 5: Solve for x
    x = 332,311,569,875.51/636,498.24
  6. Step 6: Final answer
    x = 522,093.46

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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.