Home / 485,112,138.60-727,668,207.90-193,835,231.40

Finding the Fourth Proportional to 485,112,138.60, 727,668,207.90 and 193,835,231.40

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Solution

The fourth proportional to 485,112,138.60, 727,668,207.90 and 193,835,231.40 is: 290,752,847.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,112,138.60 : 727,668,207.90 = 193,835,231.40 : x
  2. Step 2: Convert to fraction form
    485,112,138.60/727,668,207.90 = 193,835,231.40/x
  3. Step 3: Cross multiply
    485,112,138.60x = 727,668,207.90 × 193,835,231.40
  4. Step 4: Simplify right side
    485,112,138.60x = 141,047,735,460,719,808
  5. Step 5: Solve for x
    x = 141,047,735,460,719,808/485,112,138.60
  6. Step 6: Final answer
    x = 290,752,847.10

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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.