Home / 497,576,759.05-686,904,518.75-309,465,688.35

Finding the Fourth Proportional to 497,576,759.05, 686,904,518.75 and 309,465,688.35

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Solution

The fourth proportional to 497,576,759.05, 686,904,518.75 and 309,465,688.35 is: 427,217,260.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,576,759.05 : 686,904,518.75 = 309,465,688.35 : x
  2. Step 2: Convert to fraction form
    497,576,759.05/686,904,518.75 = 309,465,688.35/x
  3. Step 3: Cross multiply
    497,576,759.05x = 686,904,518.75 × 309,465,688.35
  4. Step 4: Simplify right side
    497,576,759.05x = 212,573,379,728,471,296
  5. Step 5: Solve for x
    x = 212,573,379,728,471,296/497,576,759.05
  6. Step 6: Final answer
    x = 427,217,260.17

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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.