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Finding the Fourth Proportional to 702,103.76, 968,900.28 and 379,813.10

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Solution

The fourth proportional to 702,103.76, 968,900.28 and 379,813.10 is: 524,140.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,103.76 : 968,900.28 = 379,813.10 : x
  2. Step 2: Convert to fraction form
    702,103.76/968,900.28 = 379,813.10/x
  3. Step 3: Cross multiply
    702,103.76x = 968,900.28 × 379,813.10
  4. Step 4: Simplify right side
    702,103.76x = 368,001,018,937.67
  5. Step 5: Solve for x
    x = 368,001,018,937.67/702,103.76
  6. Step 6: Final answer
    x = 524,140.50

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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.