Home / 649,256,380.60-973,898,749.11-390,687,895.48

Finding the Fourth Proportional to 649,256,380.60, 973,898,749.11 and 390,687,895.48

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Solution

The fourth proportional to 649,256,380.60, 973,898,749.11 and 390,687,895.48 is: 586,040,374.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,256,380.60 : 973,898,749.11 = 390,687,895.48 : x
  2. Step 2: Convert to fraction form
    649,256,380.60/973,898,749.11 = 390,687,895.48/x
  3. Step 3: Cross multiply
    649,256,380.60x = 973,898,749.11 × 390,687,895.48
  4. Step 4: Simplify right side
    649,256,380.60x = 380,490,452,700,390,464
  5. Step 5: Solve for x
    x = 380,490,452,700,390,464/649,256,380.60
  6. Step 6: Final answer
    x = 586,040,374.91

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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.