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Finding the Fourth Proportional to 559,401.86, 771,947.72 and 317,652.50

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Solution

The fourth proportional to 559,401.86, 771,947.72 and 317,652.50 is: 438,345.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,401.86 : 771,947.72 = 317,652.50 : x
  2. Step 2: Convert to fraction form
    559,401.86/771,947.72 = 317,652.50/x
  3. Step 3: Cross multiply
    559,401.86x = 771,947.72 × 317,652.50
  4. Step 4: Simplify right side
    559,401.86x = 245,211,124,660.10
  5. Step 5: Solve for x
    x = 245,211,124,660.10/559,401.86
  6. Step 6: Final answer
    x = 438,345.21

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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.