Home / 497,534,557.94-686,512,656.69-288,642,815.54

Finding the Fourth Proportional to 497,534,557.94, 686,512,656.69 and 288,642,815.54

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Solution

The fourth proportional to 497,534,557.94, 686,512,656.69 and 288,642,815.54 is: 398,277,753.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,534,557.94 : 686,512,656.69 = 288,642,815.54 : x
  2. Step 2: Convert to fraction form
    497,534,557.94/686,512,656.69 = 288,642,815.54/x
  3. Step 3: Cross multiply
    497,534,557.94x = 686,512,656.69 × 288,642,815.54
  4. Step 4: Simplify right side
    497,534,557.94x = 198,156,946,130,847,040
  5. Step 5: Solve for x
    x = 198,156,946,130,847,040/497,534,557.94
  6. Step 6: Final answer
    x = 398,277,753.71

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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.