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Finding the Fourth Proportional to 702,955.45, 970,079.04 and 380,665.90

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Solution

The fourth proportional to 702,955.45, 970,079.04 and 380,665.90 is: 525,319.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,955.45 : 970,079.04 = 380,665.90 : x
  2. Step 2: Convert to fraction form
    702,955.45/970,079.04 = 380,665.90/x
  3. Step 3: Cross multiply
    702,955.45x = 970,079.04 × 380,665.90
  4. Step 4: Simplify right side
    702,955.45x = 369,276,010,832.74
  5. Step 5: Solve for x
    x = 369,276,010,832.74/702,955.45
  6. Step 6: Final answer
    x = 525,319.22

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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.