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Finding the Fourth Proportional to 307,584,019.70, 429,811,411.90 and 307,584,019.70

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Solution

The fourth proportional to 307,584,019.70, 429,811,411.90 and 307,584,019.70 is: 429,811,411.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,584,019.70 : 429,811,411.90 = 307,584,019.70 : x
  2. Step 2: Convert to fraction form
    307,584,019.70/429,811,411.90 = 307,584,019.70/x
  3. Step 3: Cross multiply
    307,584,019.70x = 429,811,411.90 × 307,584,019.70
  4. Step 4: Simplify right side
    307,584,019.70x = 132,203,121,785,134,400
  5. Step 5: Solve for x
    x = 132,203,121,785,134,400/307,584,019.70
  6. Step 6: Final answer
    x = 429,811,411.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.