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Finding the Fourth Proportional to 679,655.68, 937,984.56 and 373,785.92

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Solution

The fourth proportional to 679,655.68, 937,984.56 and 373,785.92 is: 515,857.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,655.68 : 937,984.56 = 373,785.92 : x
  2. Step 2: Convert to fraction form
    679,655.68/937,984.56 = 373,785.92/x
  3. Step 3: Cross multiply
    679,655.68x = 937,984.56 × 373,785.92
  4. Step 4: Simplify right side
    679,655.68x = 350,605,421,705.40
  5. Step 5: Solve for x
    x = 350,605,421,705.40/679,655.68
  6. Step 6: Final answer
    x = 515,857.41

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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.