Home / 497,577,075-686,904,953.58-309,466,005.72

Finding the Fourth Proportional to 497,577,075, 686,904,953.58 and 309,466,005.72

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Solution

The fourth proportional to 497,577,075, 686,904,953.58 and 309,466,005.72 is: 427,217,697.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,577,075 : 686,904,953.58 = 309,466,005.72 : x
  2. Step 2: Convert to fraction form
    497,577,075/686,904,953.58 = 309,466,005.72/x
  3. Step 3: Cross multiply
    497,577,075x = 686,904,953.58 × 309,466,005.72
  4. Step 4: Simplify right side
    497,577,075x = 212,573,732,293,684,640
  5. Step 5: Solve for x
    x = 212,573,732,293,684,640/497,577,075
  6. Step 6: Final answer
    x = 427,217,697.47

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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.