Home / 448,325.37-618,339.02-287,195.40

Finding the Fourth Proportional to 448,325.37, 618,339.02 and 287,195.40

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Solution

The fourth proportional to 448,325.37, 618,339.02 and 287,195.40 is: 396,105.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,325.37 : 618,339.02 = 287,195.40 : x
  2. Step 2: Convert to fraction form
    448,325.37/618,339.02 = 287,195.40/x
  3. Step 3: Cross multiply
    448,325.37x = 618,339.02 × 287,195.40
  4. Step 4: Simplify right side
    448,325.37x = 177,584,120,748.53
  5. Step 5: Solve for x
    x = 177,584,120,748.53/448,325.37
  6. Step 6: Final answer
    x = 396,105.45

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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.