Home / 525,222.81-725,142.68-428,657.34

Finding the Fourth Proportional to 525,222.81, 725,142.68 and 428,657.34

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Solution

The fourth proportional to 525,222.81, 725,142.68 and 428,657.34 is: 591,820.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,222.81 : 725,142.68 = 428,657.34 : x
  2. Step 2: Convert to fraction form
    525,222.81/725,142.68 = 428,657.34/x
  3. Step 3: Cross multiply
    525,222.81x = 725,142.68 × 428,657.34
  4. Step 4: Simplify right side
    525,222.81x = 310,837,730,185.99
  5. Step 5: Solve for x
    x = 310,837,730,185.99/525,222.81
  6. Step 6: Final answer
    x = 591,820.70

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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.