Home / 655,748.16-904,945.68-397,623.84

Finding the Fourth Proportional to 655,748.16, 904,945.68 and 397,623.84

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Solution

The fourth proportional to 655,748.16, 904,945.68 and 397,623.84 is: 548,728.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,748.16 : 904,945.68 = 397,623.84 : x
  2. Step 2: Convert to fraction form
    655,748.16/904,945.68 = 397,623.84/x
  3. Step 3: Cross multiply
    655,748.16x = 904,945.68 × 397,623.84
  4. Step 4: Simplify right side
    655,748.16x = 359,827,976,273.01
  5. Step 5: Solve for x
    x = 359,827,976,273.01/655,748.16
  6. Step 6: Final answer
    x = 548,728.91

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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.