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Finding the Fourth Proportional to 1,319,714.22, 1,979,570.61 and 478,264.62

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Solution

The fourth proportional to 1,319,714.22, 1,979,570.61 and 478,264.62 is: 717,396.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,714.22 : 1,979,570.61 = 478,264.62 : x
  2. Step 2: Convert to fraction form
    1,319,714.22/1,979,570.61 = 478,264.62/x
  3. Step 3: Cross multiply
    1,319,714.22x = 1,979,570.61 × 478,264.62
  4. Step 4: Simplify right side
    1,319,714.22x = 946,758,585,554.82
  5. Step 5: Solve for x
    x = 946,758,585,554.82/1,319,714.22
  6. Step 6: Final answer
    x = 717,396.67

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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.