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Finding the Fourth Proportional to 697,384.65, 962,405.03 and 391,483.09

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Solution

The fourth proportional to 697,384.65, 962,405.03 and 391,483.09 is: 540,254.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,384.65 : 962,405.03 = 391,483.09 : x
  2. Step 2: Convert to fraction form
    697,384.65/962,405.03 = 391,483.09/x
  3. Step 3: Cross multiply
    697,384.65x = 962,405.03 × 391,483.09
  4. Step 4: Simplify right side
    697,384.65x = 376,765,288,206.50
  5. Step 5: Solve for x
    x = 376,765,288,206.50/697,384.65
  6. Step 6: Final answer
    x = 540,254.63

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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.