Home / 645,130,670,109.10-890,280,411,891.33-356,098,984,042.93

Finding the Fourth Proportional to 645,130,670,109.10, 890,280,411,891.33 and 356,098,984,042.93

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Solution

The fourth proportional to 645,130,670,109.10, 890,280,411,891.33 and 356,098,984,042.93 is: 491,416,646,079.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,130,670,109.10 : 890,280,411,891.33 = 356,098,984,042.93 : x
  2. Step 2: Convert to fraction form
    645,130,670,109.10/890,280,411,891.33 = 356,098,984,042.93/x
  3. Step 3: Cross multiply
    645,130,670,109.10x = 890,280,411,891.33 × 356,098,984,042.93
  4. Step 4: Simplify right side
    645,130,670,109.10x = 317,027,950,187,823,813,885,952
  5. Step 5: Solve for x
    x = 317,027,950,187,823,813,885,952/645,130,670,109.10
  6. Step 6: Final answer
    x = 491,416,646,079.17

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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.