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Finding the Fourth Proportional to 656,058.07, 984,398.15 and 390,343.51

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Solution

The fourth proportional to 656,058.07, 984,398.15 and 390,343.51 is: 585,700.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,058.07 : 984,398.15 = 390,343.51 : x
  2. Step 2: Convert to fraction form
    656,058.07/984,398.15 = 390,343.51/x
  3. Step 3: Cross multiply
    656,058.07x = 984,398.15 × 390,343.51
  4. Step 4: Simplify right side
    656,058.07x = 384,253,429,108.51
  5. Step 5: Solve for x
    x = 384,253,429,108.51/656,058.07
  6. Step 6: Final answer
    x = 585,700.33

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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.