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Finding the Fourth Proportional to 571,680.09, 788,861.63 and 330,040.65

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Solution

The fourth proportional to 571,680.09, 788,861.63 and 330,040.65 is: 455,423.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,680.09 : 788,861.63 = 330,040.65 : x
  2. Step 2: Convert to fraction form
    571,680.09/788,861.63 = 330,040.65/x
  3. Step 3: Cross multiply
    571,680.09x = 788,861.63 × 330,040.65
  4. Step 4: Simplify right side
    571,680.09x = 260,356,403,475.06
  5. Step 5: Solve for x
    x = 260,356,403,475.06/571,680.09
  6. Step 6: Final answer
    x = 455,423.25

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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.