Home / 645,005.96-890,085.80-415,572.91

Finding the Fourth Proportional to 645,005.96, 890,085.80 and 415,572.91

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Solution

The fourth proportional to 645,005.96, 890,085.80 and 415,572.91 is: 573,476.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,005.96 : 890,085.80 = 415,572.91 : x
  2. Step 2: Convert to fraction form
    645,005.96/890,085.80 = 415,572.91/x
  3. Step 3: Cross multiply
    645,005.96x = 890,085.80 × 415,572.91
  4. Step 4: Simplify right side
    645,005.96x = 369,895,546,055.68
  5. Step 5: Solve for x
    x = 369,895,546,055.68/645,005.96
  6. Step 6: Final answer
    x = 573,476.17

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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.