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Finding the Fourth Proportional to 551,810.88, 761,707.10 and 322,442.71

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Solution

The fourth proportional to 551,810.88, 761,707.10 and 322,442.71 is: 445,092.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,810.88 : 761,707.10 = 322,442.71 : x
  2. Step 2: Convert to fraction form
    551,810.88/761,707.10 = 322,442.71/x
  3. Step 3: Cross multiply
    551,810.88x = 761,707.10 × 322,442.71
  4. Step 4: Simplify right side
    551,810.88x = 245,606,897,741.71
  5. Step 5: Solve for x
    x = 245,606,897,741.71/551,810.88
  6. Step 6: Final answer
    x = 445,092.52

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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.