Home / 427,168,086.40-640,752,129.60-245,769,558.40

Finding the Fourth Proportional to 427,168,086.40, 640,752,129.60 and 245,769,558.40

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Solution

The fourth proportional to 427,168,086.40, 640,752,129.60 and 245,769,558.40 is: 368,654,337.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,168,086.40 : 640,752,129.60 = 245,769,558.40 : x
  2. Step 2: Convert to fraction form
    427,168,086.40/640,752,129.60 = 245,769,558.40/x
  3. Step 3: Cross multiply
    427,168,086.40x = 640,752,129.60 × 245,769,558.40
  4. Step 4: Simplify right side
    427,168,086.40x = 157,477,367,935,651,584
  5. Step 5: Solve for x
    x = 157,477,367,935,651,584/427,168,086.40
  6. Step 6: Final answer
    x = 368,654,337.60

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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.