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Finding the Fourth Proportional to 448,575.60, 672,085.80 and 290,722.80

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Solution

The fourth proportional to 448,575.60, 672,085.80 and 290,722.80 is: 435,580.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,575.60 : 672,085.80 = 290,722.80 : x
  2. Step 2: Convert to fraction form
    448,575.60/672,085.80 = 290,722.80/x
  3. Step 3: Cross multiply
    448,575.60x = 672,085.80 × 290,722.80
  4. Step 4: Simplify right side
    448,575.60x = 195,390,665,616.24
  5. Step 5: Solve for x
    x = 195,390,665,616.24/448,575.60
  6. Step 6: Final answer
    x = 435,580.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.