Home / 649,256,376.60-973,898,743.11-390,687,891.48

Finding the Fourth Proportional to 649,256,376.60, 973,898,743.11 and 390,687,891.48

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Solution

The fourth proportional to 649,256,376.60, 973,898,743.11 and 390,687,891.48 is: 586,040,368.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,256,376.60 : 973,898,743.11 = 390,687,891.48 : x
  2. Step 2: Convert to fraction form
    649,256,376.60/973,898,743.11 = 390,687,891.48/x
  3. Step 3: Cross multiply
    649,256,376.60x = 973,898,743.11 × 390,687,891.48
  4. Step 4: Simplify right side
    649,256,376.60x = 380,490,446,460,668,096
  5. Step 5: Solve for x
    x = 380,490,446,460,668,096/649,256,376.60
  6. Step 6: Final answer
    x = 586,040,368.91

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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.