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Finding the Fourth Proportional to 586,916.64, 879,586.56 and 320,277.60

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Solution

The fourth proportional to 586,916.64, 879,586.56 and 320,277.60 is: 479,986.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,916.64 : 879,586.56 = 320,277.60 : x
  2. Step 2: Convert to fraction form
    586,916.64/879,586.56 = 320,277.60/x
  3. Step 3: Cross multiply
    586,916.64x = 879,586.56 × 320,277.60
  4. Step 4: Simplify right side
    586,916.64x = 281,711,872,429.06
  5. Step 5: Solve for x
    x = 281,711,872,429.06/586,916.64
  6. Step 6: Final answer
    x = 479,986.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.