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Finding the Fourth Proportional to 872,184.86, 1,203,714.83 and 485,038.86

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Solution

The fourth proportional to 872,184.86, 1,203,714.83 and 485,038.86 is: 669,409.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,184.86 : 1,203,714.83 = 485,038.86 : x
  2. Step 2: Convert to fraction form
    872,184.86/1,203,714.83 = 485,038.86/x
  3. Step 3: Cross multiply
    872,184.86x = 1,203,714.83 × 485,038.86
  4. Step 4: Simplify right side
    872,184.86x = 583,848,468,908.29
  5. Step 5: Solve for x
    x = 583,848,468,908.29/872,184.86
  6. Step 6: Final answer
    x = 669,409.08

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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.