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Finding the Fourth Proportional to 578,303.84, 798,063.36 and 323,678.72

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Solution

The fourth proportional to 578,303.84, 798,063.36 and 323,678.72 is: 446,678.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,303.84 : 798,063.36 = 323,678.72 : x
  2. Step 2: Convert to fraction form
    578,303.84/798,063.36 = 323,678.72/x
  3. Step 3: Cross multiply
    578,303.84x = 798,063.36 × 323,678.72
  4. Step 4: Simplify right side
    578,303.84x = 258,316,126,843.70
  5. Step 5: Solve for x
    x = 258,316,126,843.70/578,303.84
  6. Step 6: Final answer
    x = 446,678.91

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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.