Home / 645,435,660.12-890,674,901.68-381,203,194.92

Finding the Fourth Proportional to 645,435,660.12, 890,674,901.68 and 381,203,194.92

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Solution

The fourth proportional to 645,435,660.12, 890,674,901.68 and 381,203,194.92 is: 526,044,870.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,435,660.12 : 890,674,901.68 = 381,203,194.92 : x
  2. Step 2: Convert to fraction form
    645,435,660.12/890,674,901.68 = 381,203,194.92/x
  3. Step 3: Cross multiply
    645,435,660.12x = 890,674,901.68 × 381,203,194.92
  4. Step 4: Simplify right side
    645,435,660.12x = 339,528,118,155,111,232
  5. Step 5: Solve for x
    x = 339,528,118,155,111,232/645,435,660.12
  6. Step 6: Final answer
    x = 526,044,870.36

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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.