Home / 720,226.90-993,886.33-397,930.06

Finding the Fourth Proportional to 720,226.90, 993,886.33 and 397,930.06

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Solution

The fourth proportional to 720,226.90, 993,886.33 and 397,930.06 is: 549,128.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,226.90 : 993,886.33 = 397,930.06 : x
  2. Step 2: Convert to fraction form
    720,226.90/993,886.33 = 397,930.06/x
  3. Step 3: Cross multiply
    720,226.90x = 993,886.33 × 397,930.06
  4. Step 4: Simplify right side
    720,226.90x = 395,497,239,971.00
  5. Step 5: Solve for x
    x = 395,497,239,971.00/720,226.90
  6. Step 6: Final answer
    x = 549,128.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.