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Finding the Fourth Proportional to 702,978.66, 970,110.58 and 380,688.76

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Solution

The fourth proportional to 702,978.66, 970,110.58 and 380,688.76 is: 525,350.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,978.66 : 970,110.58 = 380,688.76 : x
  2. Step 2: Convert to fraction form
    702,978.66/970,110.58 = 380,688.76/x
  3. Step 3: Cross multiply
    702,978.66x = 970,110.58 × 380,688.76
  4. Step 4: Simplify right side
    702,978.66x = 369,310,193,763.08
  5. Step 5: Solve for x
    x = 369,310,193,763.08/702,978.66
  6. Step 6: Final answer
    x = 525,350.50

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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.