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Finding the Fourth Proportional to 559,606.85, 771,708.82 and 355,303.08

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Solution

The fourth proportional to 559,606.85, 771,708.82 and 355,303.08 is: 489,969.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,606.85 : 771,708.82 = 355,303.08 : x
  2. Step 2: Convert to fraction form
    559,606.85/771,708.82 = 355,303.08/x
  3. Step 3: Cross multiply
    559,606.85x = 771,708.82 × 355,303.08
  4. Step 4: Simplify right side
    559,606.85x = 274,190,520,609.17
  5. Step 5: Solve for x
    x = 274,190,520,609.17/559,606.85
  6. Step 6: Final answer
    x = 489,969.91

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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.