Home / 672,442.40-1,008,663.60-621,120.80

Finding the Fourth Proportional to 672,442.40, 1,008,663.60 and 621,120.80

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Solution

The fourth proportional to 672,442.40, 1,008,663.60 and 621,120.80 is: 931,681.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,442.40 : 1,008,663.60 = 621,120.80 : x
  2. Step 2: Convert to fraction form
    672,442.40/1,008,663.60 = 621,120.80/x
  3. Step 3: Cross multiply
    672,442.40x = 1,008,663.60 × 621,120.80
  4. Step 4: Simplify right side
    672,442.40x = 626,501,942,162.88
  5. Step 5: Solve for x
    x = 626,501,942,162.88/672,442.40
  6. Step 6: Final answer
    x = 931,681.20

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Similar ratio
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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.