Home / 497,577,076-686,904,954.96-309,466,006.72

Finding the Fourth Proportional to 497,577,076, 686,904,954.96 and 309,466,006.72

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Solution

The fourth proportional to 497,577,076, 686,904,954.96 and 309,466,006.72 is: 427,217,698.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,577,076 : 686,904,954.96 = 309,466,006.72 : x
  2. Step 2: Convert to fraction form
    497,577,076/686,904,954.96 = 309,466,006.72/x
  3. Step 3: Cross multiply
    497,577,076x = 686,904,954.96 × 309,466,006.72
  4. Step 4: Simplify right side
    497,577,076x = 212,573,733,407,652,704
  5. Step 5: Solve for x
    x = 212,573,733,407,652,704/497,577,076
  6. Step 6: Final answer
    x = 427,217,698.85

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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.