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Finding the Fourth Proportional to 978,188.37, 1,349,913.74 and 590,949.95

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Solution

The fourth proportional to 978,188.37, 1,349,913.74 and 590,949.95 is: 815,519.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,188.37 : 1,349,913.74 = 590,949.95 : x
  2. Step 2: Convert to fraction form
    978,188.37/1,349,913.74 = 590,949.95/x
  3. Step 3: Cross multiply
    978,188.37x = 1,349,913.74 × 590,949.95
  4. Step 4: Simplify right side
    978,188.37x = 797,731,457,157.31
  5. Step 5: Solve for x
    x = 797,731,457,157.31/978,188.37
  6. Step 6: Final answer
    x = 815,519.26

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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.