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Finding the Fourth Proportional to 655,785.60, 905,001 and 369,315.60

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Solution

The fourth proportional to 655,785.60, 905,001 and 369,315.60 is: 509,665.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,785.60 : 905,001 = 369,315.60 : x
  2. Step 2: Convert to fraction form
    655,785.60/905,001 = 369,315.60/x
  3. Step 3: Cross multiply
    655,785.60x = 905,001 × 369,315.60
  4. Step 4: Simplify right side
    655,785.60x = 334,230,987,315.60
  5. Step 5: Solve for x
    x = 334,230,987,315.60/655,785.60
  6. Step 6: Final answer
    x = 509,665.03

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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.