Home / 990,105.86-1,484,920.92-457,115.06

Finding the Fourth Proportional to 990,105.86, 1,484,920.92 and 457,115.06

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Solution

The fourth proportional to 990,105.86, 1,484,920.92 and 457,115.06 is: 685,562.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,105.86 : 1,484,920.92 = 457,115.06 : x
  2. Step 2: Convert to fraction form
    990,105.86/1,484,920.92 = 457,115.06/x
  3. Step 3: Cross multiply
    990,105.86x = 1,484,920.92 × 457,115.06
  4. Step 4: Simplify right side
    990,105.86x = 678,779,715,441.06
  5. Step 5: Solve for x
    x = 678,779,715,441.06/990,105.86
  6. Step 6: Final answer
    x = 685,562.77

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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.