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Finding the Fourth Proportional to 559,666.60, 772,340.66 and 305,017.79

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Solution

The fourth proportional to 559,666.60, 772,340.66 and 305,017.79 is: 420,924.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,666.60 : 772,340.66 = 305,017.79 : x
  2. Step 2: Convert to fraction form
    559,666.60/772,340.66 = 305,017.79/x
  3. Step 3: Cross multiply
    559,666.60x = 772,340.66 × 305,017.79
  4. Step 4: Simplify right side
    559,666.60x = 235,577,641,240.34
  5. Step 5: Solve for x
    x = 235,577,641,240.34/559,666.60
  6. Step 6: Final answer
    x = 420,924.96

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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.