Home / 392,746,361.20-542,507,337.31-291,110,077.67

Finding the Fourth Proportional to 392,746,361.20, 542,507,337.31 and 291,110,077.67

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Solution

The fourth proportional to 392,746,361.20, 542,507,337.31 and 291,110,077.67 is: 402,115,382.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,746,361.20 : 542,507,337.31 = 291,110,077.67 : x
  2. Step 2: Convert to fraction form
    392,746,361.20/542,507,337.31 = 291,110,077.67/x
  3. Step 3: Cross multiply
    392,746,361.20x = 542,507,337.31 × 291,110,077.67
  4. Step 4: Simplify right side
    392,746,361.20x = 157,929,353,098,146,432
  5. Step 5: Solve for x
    x = 157,929,353,098,146,432/392,746,361.20
  6. Step 6: Final answer
    x = 402,115,382.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.