Home / 1,291,580,380.18-1,937,678,485.83-418,182,011.47

Finding the Fourth Proportional to 1,291,580,380.18, 1,937,678,485.83 and 418,182,011.47

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Solution

The fourth proportional to 1,291,580,380.18, 1,937,678,485.83 and 418,182,011.47 is: 627,372,712.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,580,380.18 : 1,937,678,485.83 = 418,182,011.47 : x
  2. Step 2: Convert to fraction form
    1,291,580,380.18/1,937,678,485.83 = 418,182,011.47/x
  3. Step 3: Cross multiply
    1,291,580,380.18x = 1,937,678,485.83 × 418,182,011.47
  4. Step 4: Simplify right side
    1,291,580,380.18x = 810,302,286,786,533,376
  5. Step 5: Solve for x
    x = 810,302,286,786,533,376/1,291,580,380.18
  6. Step 6: Final answer
    x = 627,372,712.70

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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.