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Finding the Fourth Proportional to 1,258,929.95, 1,888,953.08 and 659,748.65

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Solution

The fourth proportional to 1,258,929.95, 1,888,953.08 and 659,748.65 is: 989,915.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,929.95 : 1,888,953.08 = 659,748.65 : x
  2. Step 2: Convert to fraction form
    1,258,929.95/1,888,953.08 = 659,748.65/x
  3. Step 3: Cross multiply
    1,258,929.95x = 1,888,953.08 × 659,748.65
  4. Step 4: Simplify right side
    1,258,929.95x = 1,246,234,241,144.60
  5. Step 5: Solve for x
    x = 1,246,234,241,144.60/1,258,929.95
  6. Step 6: Final answer
    x = 989,915.48

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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.