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Finding the Fourth Proportional to 586,282.32, 879,475.32 and 319,928.40

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Solution

The fourth proportional to 586,282.32, 879,475.32 and 319,928.40 is: 479,920.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,282.32 : 879,475.32 = 319,928.40 : x
  2. Step 2: Convert to fraction form
    586,282.32/879,475.32 = 319,928.40/x
  3. Step 3: Cross multiply
    586,282.32x = 879,475.32 × 319,928.40
  4. Step 4: Simplify right side
    586,282.32x = 281,369,131,967.09
  5. Step 5: Solve for x
    x = 281,369,131,967.09/586,282.32
  6. Step 6: Final answer
    x = 479,920.89

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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.