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Finding the Fourth Proportional to 703,732.40, 971,280.72 and 401,926.40

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Solution

The fourth proportional to 703,732.40, 971,280.72 and 401,926.40 is: 554,732.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,732.40 : 971,280.72 = 401,926.40 : x
  2. Step 2: Convert to fraction form
    703,732.40/971,280.72 = 401,926.40/x
  3. Step 3: Cross multiply
    703,732.40x = 971,280.72 × 401,926.40
  4. Step 4: Simplify right side
    703,732.40x = 390,383,363,179.01
  5. Step 5: Solve for x
    x = 390,383,363,179.01/703,732.40
  6. Step 6: Final answer
    x = 554,732.68

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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.