Home / 821,327.53-1,230,272.88-660,534.35

Finding the Fourth Proportional to 821,327.53, 1,230,272.88 and 660,534.35

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Solution

The fourth proportional to 821,327.53, 1,230,272.88 and 660,534.35 is: 989,419.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,327.53 : 1,230,272.88 = 660,534.35 : x
  2. Step 2: Convert to fraction form
    821,327.53/1,230,272.88 = 660,534.35/x
  3. Step 3: Cross multiply
    821,327.53x = 1,230,272.88 × 660,534.35
  4. Step 4: Simplify right side
    821,327.53x = 812,637,490,342.81
  5. Step 5: Solve for x
    x = 812,637,490,342.81/821,327.53
  6. Step 6: Final answer
    x = 989,419.52

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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.