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Finding the Fourth Proportional to 703,935.17, 971,424.67 and 398,071.61

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Solution

The fourth proportional to 703,935.17, 971,424.67 and 398,071.61 is: 549,335.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,935.17 : 971,424.67 = 398,071.61 : x
  2. Step 2: Convert to fraction form
    703,935.17/971,424.67 = 398,071.61/x
  3. Step 3: Cross multiply
    703,935.17x = 971,424.67 × 398,071.61
  4. Step 4: Simplify right side
    703,935.17x = 386,696,576,528.32
  5. Step 5: Solve for x
    x = 386,696,576,528.32/703,935.17
  6. Step 6: Final answer
    x = 549,335.50

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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.