Home / 387,103,620.90-580,655,431.35-99,889,284.90

Finding the Fourth Proportional to 387,103,620.90, 580,655,431.35 and 99,889,284.90

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Solution

The fourth proportional to 387,103,620.90, 580,655,431.35 and 99,889,284.90 is: 149,833,927.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,103,620.90 : 580,655,431.35 = 99,889,284.90 : x
  2. Step 2: Convert to fraction form
    387,103,620.90/580,655,431.35 = 99,889,284.90/x
  3. Step 3: Cross multiply
    387,103,620.90x = 580,655,431.35 × 99,889,284.90
  4. Step 4: Simplify right side
    387,103,620.90x = 58,001,255,810,852,544
  5. Step 5: Solve for x
    x = 58,001,255,810,852,544/387,103,620.90
  6. Step 6: Final answer
    x = 149,833,927.35

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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.