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Finding the Fourth Proportional to 655,554.15, 904,695.35 and 397,439.15

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Solution

The fourth proportional to 655,554.15, 904,695.35 and 397,439.15 is: 548,484.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,554.15 : 904,695.35 = 397,439.15 : x
  2. Step 2: Convert to fraction form
    655,554.15/904,695.35 = 397,439.15/x
  3. Step 3: Cross multiply
    655,554.15x = 904,695.35 × 397,439.15
  4. Step 4: Simplify right side
    655,554.15x = 359,561,344,402.28
  5. Step 5: Solve for x
    x = 359,561,344,402.28/655,554.15
  6. Step 6: Final answer
    x = 548,484.58

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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.