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Finding the Fourth Proportional to 575,425,871.80, 863,138,807.70 and 329,530,089.40

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Solution

The fourth proportional to 575,425,871.80, 863,138,807.70 and 329,530,089.40 is: 494,295,134.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,425,871.80 : 863,138,807.70 = 329,530,089.40 : x
  2. Step 2: Convert to fraction form
    575,425,871.80/863,138,807.70 = 329,530,089.40/x
  3. Step 3: Cross multiply
    575,425,871.80x = 863,138,807.70 × 329,530,089.40
  4. Step 4: Simplify right side
    575,425,871.80x = 284,430,208,465,990,400
  5. Step 5: Solve for x
    x = 284,430,208,465,990,400/575,425,871.80
  6. Step 6: Final answer
    x = 494,295,134.10

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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.