Home / 830,521.80-1,245,782.70-664,633.80

Finding the Fourth Proportional to 830,521.80, 1,245,782.70 and 664,633.80

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Solution

The fourth proportional to 830,521.80, 1,245,782.70 and 664,633.80 is: 996,950.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,521.80 : 1,245,782.70 = 664,633.80 : x
  2. Step 2: Convert to fraction form
    830,521.80/1,245,782.70 = 664,633.80/x
  3. Step 3: Cross multiply
    830,521.80x = 1,245,782.70 × 664,633.80
  4. Step 4: Simplify right side
    830,521.80x = 827,989,289,875.26
  5. Step 5: Solve for x
    x = 827,989,289,875.26/830,521.80
  6. Step 6: Final answer
    x = 996,950.70

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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.