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Finding the Fourth Proportional to 448,416.78, 618,987.93 and 328,510.44

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Solution

The fourth proportional to 448,416.78, 618,987.93 and 328,510.44 is: 453,470.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,416.78 : 618,987.93 = 328,510.44 : x
  2. Step 2: Convert to fraction form
    448,416.78/618,987.93 = 328,510.44/x
  3. Step 3: Cross multiply
    448,416.78x = 618,987.93 × 328,510.44
  4. Step 4: Simplify right side
    448,416.78x = 203,343,997,238.99
  5. Step 5: Solve for x
    x = 203,343,997,238.99/448,416.78
  6. Step 6: Final answer
    x = 453,470.98

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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.