Home / 438,426,744.40-657,640,116.60-131,678,999.20

Finding the Fourth Proportional to 438,426,744.40, 657,640,116.60 and 131,678,999.20

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Solution

The fourth proportional to 438,426,744.40, 657,640,116.60 and 131,678,999.20 is: 197,518,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,426,744.40 : 657,640,116.60 = 131,678,999.20 : x
  2. Step 2: Convert to fraction form
    438,426,744.40/657,640,116.60 = 131,678,999.20/x
  3. Step 3: Cross multiply
    438,426,744.40x = 657,640,116.60 × 131,678,999.20
  4. Step 4: Simplify right side
    438,426,744.40x = 86,597,392,387,659,312
  5. Step 5: Solve for x
    x = 86,597,392,387,659,312/438,426,744.40
  6. Step 6: Final answer
    x = 197,518,498.80

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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.