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Finding the Fourth Proportional to 679,245.21, 937,368.09 and 373,349.87

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Solution

The fourth proportional to 679,245.21, 937,368.09 and 373,349.87 is: 515,228.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,245.21 : 937,368.09 = 373,349.87 : x
  2. Step 2: Convert to fraction form
    679,245.21/937,368.09 = 373,349.87/x
  3. Step 3: Cross multiply
    679,245.21x = 937,368.09 × 373,349.87
  4. Step 4: Simplify right side
    679,245.21x = 349,966,256,887.07
  5. Step 5: Solve for x
    x = 349,966,256,887.07/679,245.21
  6. Step 6: Final answer
    x = 515,228.16

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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.