Home / 387,103,638.90-580,655,458.35-99,889,302.90

Finding the Fourth Proportional to 387,103,638.90, 580,655,458.35 and 99,889,302.90

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Solution

The fourth proportional to 387,103,638.90, 580,655,458.35 and 99,889,302.90 is: 149,833,954.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,103,638.90 : 580,655,458.35 = 99,889,302.90 : x
  2. Step 2: Convert to fraction form
    387,103,638.90/580,655,458.35 = 99,889,302.90/x
  3. Step 3: Cross multiply
    387,103,638.90x = 580,655,458.35 × 99,889,302.90
  4. Step 4: Simplify right side
    387,103,638.90x = 58,001,268,959,661,488
  5. Step 5: Solve for x
    x = 58,001,268,959,661,488/387,103,638.90
  6. Step 6: Final answer
    x = 149,833,954.35

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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.