Home / 497,612,655.42-686,842,065.15-288,836,058.57

Finding the Fourth Proportional to 497,612,655.42, 686,842,065.15 and 288,836,058.57

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Solution

The fourth proportional to 497,612,655.42, 686,842,065.15 and 288,836,058.57 is: 398,673,049.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,612,655.42 : 686,842,065.15 = 288,836,058.57 : x
  2. Step 2: Convert to fraction form
    497,612,655.42/686,842,065.15 = 288,836,058.57/x
  3. Step 3: Cross multiply
    497,612,655.42x = 686,842,065.15 × 288,836,058.57
  4. Step 4: Simplify right side
    497,612,655.42x = 198,384,754,958,005,152
  5. Step 5: Solve for x
    x = 198,384,754,958,005,152/497,612,655.42
  6. Step 6: Final answer
    x = 398,673,049.81

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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.