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Finding the Fourth Proportional to 655,812.72, 905,024.64 and 369,337.68

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Solution

The fourth proportional to 655,812.72, 905,024.64 and 369,337.68 is: 509,687.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,812.72 : 905,024.64 = 369,337.68 : x
  2. Step 2: Convert to fraction form
    655,812.72/905,024.64 = 369,337.68/x
  3. Step 3: Cross multiply
    655,812.72x = 905,024.64 × 369,337.68
  4. Step 4: Simplify right side
    655,812.72x = 334,259,700,880.44
  5. Step 5: Solve for x
    x = 334,259,700,880.44/655,812.72
  6. Step 6: Final answer
    x = 509,687.74

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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.