Home / 487,220.40-731,608.20-355,028.40

Finding the Fourth Proportional to 487,220.40, 731,608.20 and 355,028.40

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Solution

The fourth proportional to 487,220.40, 731,608.20 and 355,028.40 is: 533,109.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,220.40 : 731,608.20 = 355,028.40 : x
  2. Step 2: Convert to fraction form
    487,220.40/731,608.20 = 355,028.40/x
  3. Step 3: Cross multiply
    487,220.40x = 731,608.20 × 355,028.40
  4. Step 4: Simplify right side
    487,220.40x = 259,741,688,672.88
  5. Step 5: Solve for x
    x = 259,741,688,672.88/487,220.40
  6. Step 6: Final answer
    x = 533,109.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.