Home / 287,712,982.20-431,569,473.30-263,904,425.40

Finding the Fourth Proportional to 287,712,982.20, 431,569,473.30 and 263,904,425.40

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Solution

The fourth proportional to 287,712,982.20, 431,569,473.30 and 263,904,425.40 is: 395,856,638.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,712,982.20 : 431,569,473.30 = 263,904,425.40 : x
  2. Step 2: Convert to fraction form
    287,712,982.20/431,569,473.30 = 263,904,425.40/x
  3. Step 3: Cross multiply
    287,712,982.20x = 431,569,473.30 × 263,904,425.40
  4. Step 4: Simplify right side
    287,712,982.20x = 113,893,093,871,417,152
  5. Step 5: Solve for x
    x = 113,893,093,871,417,152/287,712,982.20
  6. Step 6: Final answer
    x = 395,856,638.10

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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.