Home / 485,112,035.60-727,668,053.40-193,835,128.40

Finding the Fourth Proportional to 485,112,035.60, 727,668,053.40 and 193,835,128.40

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Solution

The fourth proportional to 485,112,035.60, 727,668,053.40 and 193,835,128.40 is: 290,752,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,112,035.60 : 727,668,053.40 = 193,835,128.40 : x
  2. Step 2: Convert to fraction form
    485,112,035.60/727,668,053.40 = 193,835,128.40/x
  3. Step 3: Cross multiply
    485,112,035.60x = 727,668,053.40 × 193,835,128.40
  4. Step 4: Simplify right side
    485,112,035.60x = 141,047,630,563,367,056
  5. Step 5: Solve for x
    x = 141,047,630,563,367,056/485,112,035.60
  6. Step 6: Final answer
    x = 290,752,692.60

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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.