Home / 686,552,766.21-947,431,655.51-373,294,868.76

Finding the Fourth Proportional to 686,552,766.21, 947,431,655.51 and 373,294,868.76

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Solution

The fourth proportional to 686,552,766.21, 947,431,655.51 and 373,294,868.76 is: 515,140,849.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,552,766.21 : 947,431,655.51 = 373,294,868.76 : x
  2. Step 2: Convert to fraction form
    686,552,766.21/947,431,655.51 = 373,294,868.76/x
  3. Step 3: Cross multiply
    686,552,766.21x = 947,431,655.51 × 373,294,868.76
  4. Step 4: Simplify right side
    686,552,766.21x = 353,671,375,500,808,512
  5. Step 5: Solve for x
    x = 353,671,375,500,808,512/686,552,766.21
  6. Step 6: Final answer
    x = 515,140,849.92

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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.