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Finding the Fourth Proportional to 636,204.66, 878,166.72 and 407,378.04

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Solution

The fourth proportional to 636,204.66, 878,166.72 and 407,378.04 is: 562,312.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,204.66 : 878,166.72 = 407,378.04 : x
  2. Step 2: Convert to fraction form
    636,204.66/878,166.72 = 407,378.04/x
  3. Step 3: Cross multiply
    636,204.66x = 878,166.72 × 407,378.04
  4. Step 4: Simplify right side
    636,204.66x = 357,745,837,186.83
  5. Step 5: Solve for x
    x = 357,745,837,186.83/636,204.66
  6. Step 6: Final answer
    x = 562,312.51

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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.