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Finding the Fourth Proportional to 525,642.40, 725,386.80 and 283,924.97

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Solution

The fourth proportional to 525,642.40, 725,386.80 and 283,924.97 is: 391,816.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,642.40 : 725,386.80 = 283,924.97 : x
  2. Step 2: Convert to fraction form
    525,642.40/725,386.80 = 283,924.97/x
  3. Step 3: Cross multiply
    525,642.40x = 725,386.80 × 283,924.97
  4. Step 4: Simplify right side
    525,642.40x = 205,955,420,381.84
  5. Step 5: Solve for x
    x = 205,955,420,381.84/525,642.40
  6. Step 6: Final answer
    x = 391,816.61

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1.5x scale

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.