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Finding the Fourth Proportional to 680,875.80, 1,021,313.70 and 606,226.20

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Solution

The fourth proportional to 680,875.80, 1,021,313.70 and 606,226.20 is: 909,339.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,875.80 : 1,021,313.70 = 606,226.20 : x
  2. Step 2: Convert to fraction form
    680,875.80/1,021,313.70 = 606,226.20/x
  3. Step 3: Cross multiply
    680,875.80x = 1,021,313.70 × 606,226.20
  4. Step 4: Simplify right side
    680,875.80x = 619,147,123,358.94
  5. Step 5: Solve for x
    x = 619,147,123,358.94/680,875.80
  6. Step 6: Final answer
    x = 909,339.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.