Home / 645,130,660,669.60-890,280,398,892.92-356,098,974,601.80

Finding the Fourth Proportional to 645,130,660,669.60, 890,280,398,892.92 and 356,098,974,601.80

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Solution

The fourth proportional to 645,130,660,669.60, 890,280,398,892.92 and 356,098,974,601.80 is: 491,416,633,065.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,130,660,669.60 : 890,280,398,892.92 = 356,098,974,601.80 : x
  2. Step 2: Convert to fraction form
    645,130,660,669.60/890,280,398,892.92 = 356,098,974,601.80/x
  3. Step 3: Cross multiply
    645,130,660,669.60x = 890,280,398,892.92 × 356,098,974,601.80
  4. Step 4: Simplify right side
    645,130,660,669.60x = 317,027,937,153,850,321,928,192
  5. Step 5: Solve for x
    x = 317,027,937,153,850,321,928,192/645,130,660,669.60
  6. Step 6: Final answer
    x = 491,416,633,065.93

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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.