Home / 725,136.30-1,000,705.59-402,859.98

Finding the Fourth Proportional to 725,136.30, 1,000,705.59 and 402,859.98

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Solution

The fourth proportional to 725,136.30, 1,000,705.59 and 402,859.98 is: 555,956.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,136.30 : 1,000,705.59 = 402,859.98 : x
  2. Step 2: Convert to fraction form
    725,136.30/1,000,705.59 = 402,859.98/x
  3. Step 3: Cross multiply
    725,136.30x = 1,000,705.59 × 402,859.98
  4. Step 4: Simplify right side
    725,136.30x = 403,144,233,973.29
  5. Step 5: Solve for x
    x = 403,144,233,973.29/725,136.30
  6. Step 6: Final answer
    x = 555,956.49

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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.