Home / 1,189,009.02-1,783,699.43-390,108.86

Finding the Fourth Proportional to 1,189,009.02, 1,783,699.43 and 390,108.86

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Solution

The fourth proportional to 1,189,009.02, 1,783,699.43 and 390,108.86 is: 585,224.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,009.02 : 1,783,699.43 = 390,108.86 : x
  2. Step 2: Convert to fraction form
    1,189,009.02/1,783,699.43 = 390,108.86/x
  3. Step 3: Cross multiply
    1,189,009.02x = 1,783,699.43 × 390,108.86
  4. Step 4: Simplify right side
    1,189,009.02x = 695,836,949,234.14
  5. Step 5: Solve for x
    x = 695,836,949,234.14/1,189,009.02
  6. Step 6: Final answer
    x = 585,224.28

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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.