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Finding the Fourth Proportional to 586,670.40, 879,314.40 and 306,043.20

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Solution

The fourth proportional to 586,670.40, 879,314.40 and 306,043.20 is: 458,704.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,670.40 : 879,314.40 = 306,043.20 : x
  2. Step 2: Convert to fraction form
    586,670.40/879,314.40 = 306,043.20/x
  3. Step 3: Cross multiply
    586,670.40x = 879,314.40 × 306,043.20
  4. Step 4: Simplify right side
    586,670.40x = 269,108,192,782.08
  5. Step 5: Solve for x
    x = 269,108,192,782.08/586,670.40
  6. Step 6: Final answer
    x = 458,704.23

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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.