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Finding the Fourth Proportional to 586,576.89, 809,476.10 and 318,304.89

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Solution

The fourth proportional to 586,576.89, 809,476.10 and 318,304.89 is: 439,260.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,576.89 : 809,476.10 = 318,304.89 : x
  2. Step 2: Convert to fraction form
    586,576.89/809,476.10 = 318,304.89/x
  3. Step 3: Cross multiply
    586,576.89x = 809,476.10 × 318,304.89
  4. Step 4: Simplify right side
    586,576.89x = 257,660,199,376.61
  5. Step 5: Solve for x
    x = 257,660,199,376.61/586,576.89
  6. Step 6: Final answer
    x = 439,260.74

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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.