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Finding the Fourth Proportional to 927,057, 1,390,802.34 and 287,327.28

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Solution

The fourth proportional to 927,057, 1,390,802.34 and 287,327.28 is: 431,058.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,057 : 1,390,802.34 = 287,327.28 : x
  2. Step 2: Convert to fraction form
    927,057/1,390,802.34 = 287,327.28/x
  3. Step 3: Cross multiply
    927,057x = 1,390,802.34 × 287,327.28
  4. Step 4: Simplify right side
    927,057x = 399,615,453,369.84
  5. Step 5: Solve for x
    x = 399,615,453,369.84/927,057
  6. Step 6: Final answer
    x = 431,058.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.