Home / 287,369,608.20-431,012,421.90-82,876,360.20

Finding the Fourth Proportional to 287,369,608.20, 431,012,421.90 and 82,876,360.20

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Solution

The fourth proportional to 287,369,608.20, 431,012,421.90 and 82,876,360.20 is: 124,302,430.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,369,608.20 : 431,012,421.90 = 82,876,360.20 : x
  2. Step 2: Convert to fraction form
    287,369,608.20/431,012,421.90 = 82,876,360.20/x
  3. Step 3: Cross multiply
    287,369,608.20x = 431,012,421.90 × 82,876,360.20
  4. Step 4: Simplify right side
    287,369,608.20x = 35,720,740,728,058,768
  5. Step 5: Solve for x
    x = 35,720,740,728,058,768/287,369,608.20
  6. Step 6: Final answer
    x = 124,302,430.42

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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.