Home / 497,613,688.84-686,843,475.78-288,837,092.80

Finding the Fourth Proportional to 497,613,688.84, 686,843,475.78 and 288,837,092.80

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Solution

The fourth proportional to 497,613,688.84, 686,843,475.78 and 288,837,092.80 is: 398,674,468.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,613,688.84 : 686,843,475.78 = 288,837,092.80 : x
  2. Step 2: Convert to fraction form
    497,613,688.84/686,843,475.78 = 288,837,092.80/x
  3. Step 3: Cross multiply
    497,613,688.84x = 686,843,475.78 × 288,837,092.80
  4. Step 4: Simplify right side
    497,613,688.84x = 198,385,872,752,942,400
  5. Step 5: Solve for x
    x = 198,385,872,752,942,400/497,613,688.84
  6. Step 6: Final answer
    x = 398,674,468.17

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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.