Home / 448,199.04-618,318.72-320,828.16

Finding the Fourth Proportional to 448,199.04, 618,318.72 and 320,828.16

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Solution

The fourth proportional to 448,199.04, 618,318.72 and 320,828.16 is: 442,602.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,199.04 : 618,318.72 = 320,828.16 : x
  2. Step 2: Convert to fraction form
    448,199.04/618,318.72 = 320,828.16/x
  3. Step 3: Cross multiply
    448,199.04x = 618,318.72 × 320,828.16
  4. Step 4: Simplify right side
    448,199.04x = 198,374,057,231.16
  5. Step 5: Solve for x
    x = 198,374,057,231.16/448,199.04
  6. Step 6: Final answer
    x = 442,602.59

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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.