Home / 1,398,768,120.23-1,931,171,151.17-890,417,663.36

Finding the Fourth Proportional to 1,398,768,120.23, 1,931,171,151.17 and 890,417,663.36

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Solution

The fourth proportional to 1,398,768,120.23, 1,931,171,151.17 and 890,417,663.36 is: 1,229,330,922.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,768,120.23 : 1,931,171,151.17 = 890,417,663.36 : x
  2. Step 2: Convert to fraction form
    1,398,768,120.23/1,931,171,151.17 = 890,417,663.36/x
  3. Step 3: Cross multiply
    1,398,768,120.23x = 1,931,171,151.17 × 890,417,663.36
  4. Step 4: Simplify right side
    1,398,768,120.23x = 1,719,548,903,958,924,800
  5. Step 5: Solve for x
    x = 1,719,548,903,958,924,800/1,398,768,120.23
  6. Step 6: Final answer
    x = 1,229,330,922.76

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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.