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Finding the Fourth Proportional to 647,561.20, 971,341.80 and 606,089.20

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Solution

The fourth proportional to 647,561.20, 971,341.80 and 606,089.20 is: 909,133.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,561.20 : 971,341.80 = 606,089.20 : x
  2. Step 2: Convert to fraction form
    647,561.20/971,341.80 = 606,089.20/x
  3. Step 3: Cross multiply
    647,561.20x = 971,341.80 × 606,089.20
  4. Step 4: Simplify right side
    647,561.20x = 588,719,774,488.56
  5. Step 5: Solve for x
    x = 588,719,774,488.56/647,561.20
  6. Step 6: Final answer
    x = 909,133.80

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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.