Home / 390,259,353.75-585,423,439.64-110,142,763.61

Finding the Fourth Proportional to 390,259,353.75, 585,423,439.64 and 110,142,763.61

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Solution

The fourth proportional to 390,259,353.75, 585,423,439.64 and 110,142,763.61 is: 165,223,856.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,259,353.75 : 585,423,439.64 = 110,142,763.61 : x
  2. Step 2: Convert to fraction form
    390,259,353.75/585,423,439.64 = 110,142,763.61/x
  3. Step 3: Cross multiply
    390,259,353.75x = 585,423,439.64 × 110,142,763.61
  4. Step 4: Simplify right side
    390,259,353.75x = 64,480,155,520,956,824
  5. Step 5: Solve for x
    x = 64,480,155,520,956,824/390,259,353.75
  6. Step 6: Final answer
    x = 165,223,856.65

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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.