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Finding the Fourth Proportional to 539,637, 809,494.74 and 207,213

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Solution

The fourth proportional to 539,637, 809,494.74 and 207,213 is: 310,834.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,637 : 809,494.74 = 207,213 : x
  2. Step 2: Convert to fraction form
    539,637/809,494.74 = 207,213/x
  3. Step 3: Cross multiply
    539,637x = 809,494.74 × 207,213
  4. Step 4: Simplify right side
    539,637x = 167,737,833,559.62
  5. Step 5: Solve for x
    x = 167,737,833,559.62/539,637
  6. Step 6: Final answer
    x = 310,834.57

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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.