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Finding the Fourth Proportional to 826,604.61, 1,239,920.06 and 314,277.56

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Solution

The fourth proportional to 826,604.61, 1,239,920.06 and 314,277.56 is: 471,421.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,604.61 : 1,239,920.06 = 314,277.56 : x
  2. Step 2: Convert to fraction form
    826,604.61/1,239,920.06 = 314,277.56/x
  3. Step 3: Cross multiply
    826,604.61x = 1,239,920.06 × 314,277.56
  4. Step 4: Simplify right side
    826,604.61x = 389,679,051,417.84
  5. Step 5: Solve for x
    x = 389,679,051,417.84/826,604.61
  6. Step 6: Final answer
    x = 471,421.34

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1.5x scale

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.