Home / 558,813,895.21-771,128,428.77-307,904,245.87

Finding the Fourth Proportional to 558,813,895.21, 771,128,428.77 and 307,904,245.87

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Solution

The fourth proportional to 558,813,895.21, 771,128,428.77 and 307,904,245.87 is: 424,888,714.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,813,895.21 : 771,128,428.77 = 307,904,245.87 : x
  2. Step 2: Convert to fraction form
    558,813,895.21/771,128,428.77 = 307,904,245.87/x
  3. Step 3: Cross multiply
    558,813,895.21x = 771,128,428.77 × 307,904,245.87
  4. Step 4: Simplify right side
    558,813,895.21x = 237,433,717,329,344,864
  5. Step 5: Solve for x
    x = 237,433,717,329,344,864/558,813,895.21
  6. Step 6: Final answer
    x = 424,888,714.05

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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.