Home / 511,752,643.80-767,158,142.10-278,242,118.52

Finding the Fourth Proportional to 511,752,643.80, 767,158,142.10 and 278,242,118.52

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Solution

The fourth proportional to 511,752,643.80, 767,158,142.10 and 278,242,118.52 is: 417,107,188.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,752,643.80 : 767,158,142.10 = 278,242,118.52 : x
  2. Step 2: Convert to fraction form
    511,752,643.80/767,158,142.10 = 278,242,118.52/x
  3. Step 3: Cross multiply
    511,752,643.80x = 767,158,142.10 × 278,242,118.52
  4. Step 4: Simplify right side
    511,752,643.80x = 213,455,706,697,771,200
  5. Step 5: Solve for x
    x = 213,455,706,697,771,200/511,752,643.80
  6. Step 6: Final answer
    x = 417,107,188.96

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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.