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Finding the Fourth Proportional to 702,979.66, 970,111.96 and 380,689.76

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Solution

The fourth proportional to 702,979.66, 970,111.96 and 380,689.76 is: 525,351.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,979.66 : 970,111.96 = 380,689.76 : x
  2. Step 2: Convert to fraction form
    702,979.66/970,111.96 = 380,689.76/x
  3. Step 3: Cross multiply
    702,979.66x = 970,111.96 × 380,689.76
  4. Step 4: Simplify right side
    702,979.66x = 369,311,689,225.53
  5. Step 5: Solve for x
    x = 369,311,689,225.53/702,979.66
  6. Step 6: Final answer
    x = 525,351.88

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1.5x scale

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.