Home / 547,275.40-821,569.20-307,580.20

Finding the Fourth Proportional to 547,275.40, 821,569.20 and 307,580.20

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Solution

The fourth proportional to 547,275.40, 821,569.20 and 307,580.20 is: 461,739.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,275.40 : 821,569.20 = 307,580.20 : x
  2. Step 2: Convert to fraction form
    547,275.40/821,569.20 = 307,580.20/x
  3. Step 3: Cross multiply
    547,275.40x = 821,569.20 × 307,580.20
  4. Step 4: Simplify right side
    547,275.40x = 252,698,418,849.84
  5. Step 5: Solve for x
    x = 252,698,418,849.84/547,275.40
  6. Step 6: Final answer
    x = 461,739.04

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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.