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Finding the Fourth Proportional to 697,228.28, 962,271.54 and 391,322.87

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Solution

The fourth proportional to 697,228.28, 962,271.54 and 391,322.87 is: 540,079.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,228.28 : 962,271.54 = 391,322.87 : x
  2. Step 2: Convert to fraction form
    697,228.28/962,271.54 = 391,322.87/x
  3. Step 3: Cross multiply
    697,228.28x = 962,271.54 × 391,322.87
  4. Step 4: Simplify right side
    697,228.28x = 376,558,855,940.76
  5. Step 5: Solve for x
    x = 376,558,855,940.76/697,228.28
  6. Step 6: Final answer
    x = 540,079.73

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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.