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Finding the Fourth Proportional to 594,663.19, 821,316.31 and 391,621.70

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Solution

The fourth proportional to 594,663.19, 821,316.31 and 391,621.70 is: 540,886.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    594,663.19 : 821,316.31 = 391,621.70 : x
  2. Step 2: Convert to fraction form
    594,663.19/821,316.31 = 391,621.70/x
  3. Step 3: Cross multiply
    594,663.19x = 821,316.31 × 391,621.70
  4. Step 4: Simplify right side
    594,663.19x = 321,645,290,634.16
  5. Step 5: Solve for x
    x = 321,645,290,634.16/594,663.19
  6. Step 6: Final answer
    x = 540,886.50

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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.