Home / 791,173,009.20-1,186,759,513.80-638,118,001.20

Finding the Fourth Proportional to 791,173,009.20, 1,186,759,513.80 and 638,118,001.20

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Solution

The fourth proportional to 791,173,009.20, 1,186,759,513.80 and 638,118,001.20 is: 957,177,001.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,173,009.20 : 1,186,759,513.80 = 638,118,001.20 : x
  2. Step 2: Convert to fraction form
    791,173,009.20/1,186,759,513.80 = 638,118,001.20/x
  3. Step 3: Cross multiply
    791,173,009.20x = 1,186,759,513.80 × 638,118,001.20
  4. Step 4: Simplify right side
    791,173,009.20x = 757,292,608,851,139,840
  5. Step 5: Solve for x
    x = 757,292,608,851,139,840/791,173,009.20
  6. Step 6: Final answer
    x = 957,177,001.80

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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.