Home / 830,610.64-1,245,521.40-430,850.80

Finding the Fourth Proportional to 830,610.64, 1,245,521.40 and 430,850.80

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Solution

The fourth proportional to 830,610.64, 1,245,521.40 and 430,850.80 is: 646,071.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,610.64 : 1,245,521.40 = 430,850.80 : x
  2. Step 2: Convert to fraction form
    830,610.64/1,245,521.40 = 430,850.80/x
  3. Step 3: Cross multiply
    830,610.64x = 1,245,521.40 × 430,850.80
  4. Step 4: Simplify right side
    830,610.64x = 536,633,891,607.12
  5. Step 5: Solve for x
    x = 536,633,891,607.12/830,610.64
  6. Step 6: Final answer
    x = 646,071.54

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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.