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Finding the Fourth Proportional to 703,417.64, 970,588.52 and 393,325.80

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Solution

The fourth proportional to 703,417.64, 970,588.52 and 393,325.80 is: 542,718.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,417.64 : 970,588.52 = 393,325.80 : x
  2. Step 2: Convert to fraction form
    703,417.64/970,588.52 = 393,325.80/x
  3. Step 3: Cross multiply
    703,417.64x = 970,588.52 × 393,325.80
  4. Step 4: Simplify right side
    703,417.64x = 381,757,506,099.82
  5. Step 5: Solve for x
    x = 381,757,506,099.82/703,417.64
  6. Step 6: Final answer
    x = 542,718.13

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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.