Home / 663,020.80-994,531.20-477,779.20

Finding the Fourth Proportional to 663,020.80, 994,531.20 and 477,779.20

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Solution

The fourth proportional to 663,020.80, 994,531.20 and 477,779.20 is: 716,668.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,020.80 : 994,531.20 = 477,779.20 : x
  2. Step 2: Convert to fraction form
    663,020.80/994,531.20 = 477,779.20/x
  3. Step 3: Cross multiply
    663,020.80x = 994,531.20 × 477,779.20
  4. Step 4: Simplify right side
    663,020.80x = 475,166,321,111.04
  5. Step 5: Solve for x
    x = 475,166,321,111.04/663,020.80
  6. Step 6: Final answer
    x = 716,668.80

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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.