Home / 805,609,346.49-1,208,615,131.80-280,985,987.70

Finding the Fourth Proportional to 805,609,346.49, 1,208,615,131.80 and 280,985,987.70

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Solution

The fourth proportional to 805,609,346.49, 1,208,615,131.80 and 280,985,987.70 is: 421,549,126.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,609,346.49 : 1,208,615,131.80 = 280,985,987.70 : x
  2. Step 2: Convert to fraction form
    805,609,346.49/1,208,615,131.80 = 280,985,987.70/x
  3. Step 3: Cross multiply
    805,609,346.49x = 1,208,615,131.80 × 280,985,987.70
  4. Step 4: Simplify right side
    805,609,346.49x = 339,603,916,557,988,672
  5. Step 5: Solve for x
    x = 339,603,916,557,988,672/805,609,346.49
  6. Step 6: Final answer
    x = 421,549,126.80

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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.