Home / 645,130,670,162.85-890,280,411,965.55-356,098,984,096.68

Finding the Fourth Proportional to 645,130,670,162.85, 890,280,411,965.55 and 356,098,984,096.68

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Solution

The fourth proportional to 645,130,670,162.85, 890,280,411,965.55 and 356,098,984,096.68 is: 491,416,646,153.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,130,670,162.85 : 890,280,411,965.55 = 356,098,984,096.68 : x
  2. Step 2: Convert to fraction form
    645,130,670,162.85/890,280,411,965.55 = 356,098,984,096.68/x
  3. Step 3: Cross multiply
    645,130,670,162.85x = 890,280,411,965.55 × 356,098,984,096.68
  4. Step 4: Simplify right side
    645,130,670,162.85x = 317,027,950,262,106,145,685,504
  5. Step 5: Solve for x
    x = 317,027,950,262,106,145,685,504/645,130,670,162.85
  6. Step 6: Final answer
    x = 491,416,646,153.37

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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.