Home / 672,446.40-1,008,669.60-621,124.80

Finding the Fourth Proportional to 672,446.40, 1,008,669.60 and 621,124.80

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Solution

The fourth proportional to 672,446.40, 1,008,669.60 and 621,124.80 is: 931,687.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,446.40 : 1,008,669.60 = 621,124.80 : x
  2. Step 2: Convert to fraction form
    672,446.40/1,008,669.60 = 621,124.80/x
  3. Step 3: Cross multiply
    672,446.40x = 1,008,669.60 × 621,124.80
  4. Step 4: Simplify right side
    672,446.40x = 626,509,703,566.08
  5. Step 5: Solve for x
    x = 626,509,703,566.08/672,446.40
  6. Step 6: Final answer
    x = 931,687.20

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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.