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Finding the Fourth Proportional to 495,242,893.80, 742,864,340.70 and 487,590,143.40

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Solution

The fourth proportional to 495,242,893.80, 742,864,340.70 and 487,590,143.40 is: 731,385,215.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,242,893.80 : 742,864,340.70 = 487,590,143.40 : x
  2. Step 2: Convert to fraction form
    495,242,893.80/742,864,340.70 = 487,590,143.40/x
  3. Step 3: Cross multiply
    495,242,893.80x = 742,864,340.70 × 487,590,143.40
  4. Step 4: Simplify right side
    495,242,893.80x = 362,213,330,408,659,456
  5. Step 5: Solve for x
    x = 362,213,330,408,659,456/495,242,893.80
  6. Step 6: Final answer
    x = 731,385,215.10

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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.