Home / 287,788,511.80-431,682,767.70-268,514,918.20

Finding the Fourth Proportional to 287,788,511.80, 431,682,767.70 and 268,514,918.20

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Solution

The fourth proportional to 287,788,511.80, 431,682,767.70 and 268,514,918.20 is: 402,772,377.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,788,511.80 : 431,682,767.70 = 268,514,918.20 : x
  2. Step 2: Convert to fraction form
    287,788,511.80/431,682,767.70 = 268,514,918.20/x
  3. Step 3: Cross multiply
    287,788,511.80x = 431,682,767.70 × 268,514,918.20
  4. Step 4: Simplify right side
    287,788,511.80x = 115,913,263,057,315,088
  5. Step 5: Solve for x
    x = 115,913,263,057,315,088/287,788,511.80
  6. Step 6: Final answer
    x = 402,772,377.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.