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Finding the Fourth Proportional to 703,737.40, 971,287.62 and 401,931.40

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Solution

The fourth proportional to 703,737.40, 971,287.62 and 401,931.40 is: 554,739.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,737.40 : 971,287.62 = 401,931.40 : x
  2. Step 2: Convert to fraction form
    703,737.40/971,287.62 = 401,931.40/x
  3. Step 3: Cross multiply
    703,737.40x = 971,287.62 × 401,931.40
  4. Step 4: Simplify right side
    703,737.40x = 390,390,992,909.27
  5. Step 5: Solve for x
    x = 390,390,992,909.27/703,737.40
  6. Step 6: Final answer
    x = 554,739.58

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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.