Home / 472,392,496.80-708,588,745.20-127,380,999.60

Finding the Fourth Proportional to 472,392,496.80, 708,588,745.20 and 127,380,999.60

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Solution

The fourth proportional to 472,392,496.80, 708,588,745.20 and 127,380,999.60 is: 191,071,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,496.80 : 708,588,745.20 = 127,380,999.60 : x
  2. Step 2: Convert to fraction form
    472,392,496.80/708,588,745.20 = 127,380,999.60/x
  3. Step 3: Cross multiply
    472,392,496.80x = 708,588,745.20 × 127,380,999.60
  4. Step 4: Simplify right side
    472,392,496.80x = 90,260,742,668,885,696
  5. Step 5: Solve for x
    x = 90,260,742,668,885,696/472,392,496.80
  6. Step 6: Final answer
    x = 191,071,499.40

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1.5x scale

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.