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Finding the Fourth Proportional to 564,411.65, 778,888.60 and 322,699.28

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Solution

The fourth proportional to 564,411.65, 778,888.60 and 322,699.28 is: 445,325.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,411.65 : 778,888.60 = 322,699.28 : x
  2. Step 2: Convert to fraction form
    564,411.65/778,888.60 = 322,699.28/x
  3. Step 3: Cross multiply
    564,411.65x = 778,888.60 × 322,699.28
  4. Step 4: Simplify right side
    564,411.65x = 251,346,793,057.68
  5. Step 5: Solve for x
    x = 251,346,793,057.68/564,411.65
  6. Step 6: Final answer
    x = 445,325.31

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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.