Home / 640,281,108.48-883,519,905.42-354,127,162.90

Finding the Fourth Proportional to 640,281,108.48, 883,519,905.42 and 354,127,162.90

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Solution

The fourth proportional to 640,281,108.48, 883,519,905.42 and 354,127,162.90 is: 488,657,861.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,281,108.48 : 883,519,905.42 = 354,127,162.90 : x
  2. Step 2: Convert to fraction form
    640,281,108.48/883,519,905.42 = 354,127,162.90/x
  3. Step 3: Cross multiply
    640,281,108.48x = 883,519,905.42 × 354,127,162.90
  4. Step 4: Simplify right side
    640,281,108.48x = 312,878,397,472,060,928
  5. Step 5: Solve for x
    x = 312,878,397,472,060,928/640,281,108.48
  6. Step 6: Final answer
    x = 488,657,861.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.