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Finding the Fourth Proportional to 370,878,905.80, 556,318,358.70 and 349,715,744.20

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Solution

The fourth proportional to 370,878,905.80, 556,318,358.70 and 349,715,744.20 is: 524,573,616.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,878,905.80 : 556,318,358.70 = 349,715,744.20 : x
  2. Step 2: Convert to fraction form
    370,878,905.80/556,318,358.70 = 349,715,744.20/x
  3. Step 3: Cross multiply
    370,878,905.80x = 556,318,358.70 × 349,715,744.20
  4. Step 4: Simplify right side
    370,878,905.80x = 194,553,288,824,893,056
  5. Step 5: Solve for x
    x = 194,553,288,824,893,056/370,878,905.80
  6. Step 6: Final answer
    x = 524,573,616.30

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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.