Home / 387,103,620.40-580,655,430.60-99,889,284.40

Finding the Fourth Proportional to 387,103,620.40, 580,655,430.60 and 99,889,284.40

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Solution

The fourth proportional to 387,103,620.40, 580,655,430.60 and 99,889,284.40 is: 149,833,926.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,103,620.40 : 580,655,430.60 = 99,889,284.40 : x
  2. Step 2: Convert to fraction form
    387,103,620.40/580,655,430.60 = 99,889,284.40/x
  3. Step 3: Cross multiply
    387,103,620.40x = 580,655,430.60 × 99,889,284.40
  4. Step 4: Simplify right side
    387,103,620.40x = 58,001,255,445,607,872
  5. Step 5: Solve for x
    x = 58,001,255,445,607,872/387,103,620.40
  6. Step 6: Final answer
    x = 149,833,926.60

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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.