Home / 418,078,319.40-627,076,956.69-126,948,001.32

Finding the Fourth Proportional to 418,078,319.40, 627,076,956.69 and 126,948,001.32

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Solution

The fourth proportional to 418,078,319.40, 627,076,956.69 and 126,948,001.32 is: 190,409,697.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,078,319.40 : 627,076,956.69 = 126,948,001.32 : x
  2. Step 2: Convert to fraction form
    418,078,319.40/627,076,956.69 = 126,948,001.32/x
  3. Step 3: Cross multiply
    418,078,319.40x = 627,076,956.69 × 126,948,001.32
  4. Step 4: Simplify right side
    418,078,319.40x = 79,606,166,325,623,712
  5. Step 5: Solve for x
    x = 79,606,166,325,623,712/418,078,319.40
  6. Step 6: Final answer
    x = 190,409,697.49

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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.