Home / 287,607,741.12-431,348,990.81-77,513,523.48

Finding the Fourth Proportional to 287,607,741.12, 431,348,990.81 and 77,513,523.48

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Solution

The fourth proportional to 287,607,741.12, 431,348,990.81 and 77,513,523.48 is: 116,253,408.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,607,741.12 : 431,348,990.81 = 77,513,523.48 : x
  2. Step 2: Convert to fraction form
    287,607,741.12/431,348,990.81 = 77,513,523.48/x
  3. Step 3: Cross multiply
    287,607,741.12x = 431,348,990.81 × 77,513,523.48
  4. Step 4: Simplify right side
    287,607,741.12x = 33,435,380,126,837,672
  5. Step 5: Solve for x
    x = 33,435,380,126,837,672/287,607,741.12
  6. Step 6: Final answer
    x = 116,253,408.19

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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.