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Finding the Fourth Proportional to 472,392,709.80, 708,589,064.70 and 424,775,596.20

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Solution

The fourth proportional to 472,392,709.80, 708,589,064.70 and 424,775,596.20 is: 637,163,394.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,709.80 : 708,589,064.70 = 424,775,596.20 : x
  2. Step 2: Convert to fraction form
    472,392,709.80/708,589,064.70 = 424,775,596.20/x
  3. Step 3: Cross multiply
    472,392,709.80x = 708,589,064.70 × 424,775,596.20
  4. Step 4: Simplify right side
    472,392,709.80x = 300,991,342,418,742,912
  5. Step 5: Solve for x
    x = 300,991,342,418,742,912/472,392,709.80
  6. Step 6: Final answer
    x = 637,163,394.30

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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.