Home / 497,613,687.84-686,843,474.40-288,837,091.80

Finding the Fourth Proportional to 497,613,687.84, 686,843,474.40 and 288,837,091.80

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Solution

The fourth proportional to 497,613,687.84, 686,843,474.40 and 288,837,091.80 is: 398,674,466.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,613,687.84 : 686,843,474.40 = 288,837,091.80 : x
  2. Step 2: Convert to fraction form
    497,613,687.84/686,843,474.40 = 288,837,091.80/x
  3. Step 3: Cross multiply
    497,613,687.84x = 686,843,474.40 × 288,837,091.80
  4. Step 4: Simplify right side
    497,613,687.84x = 198,385,871,667,503,744
  5. Step 5: Solve for x
    x = 198,385,871,667,503,744/497,613,687.84
  6. Step 6: Final answer
    x = 398,674,466.79

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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.