Home / 1,319,706.53-1,979,594.19-421,147.06

Finding the Fourth Proportional to 1,319,706.53, 1,979,594.19 and 421,147.06

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Solution

The fourth proportional to 1,319,706.53, 1,979,594.19 and 421,147.06 is: 631,731.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,706.53 : 1,979,594.19 = 421,147.06 : x
  2. Step 2: Convert to fraction form
    1,319,706.53/1,979,594.19 = 421,147.06/x
  3. Step 3: Cross multiply
    1,319,706.53x = 1,979,594.19 × 421,147.06
  4. Step 4: Simplify right side
    1,319,706.53x = 833,700,273,111.58
  5. Step 5: Solve for x
    x = 833,700,273,111.58/1,319,706.53
  6. Step 6: Final answer
    x = 631,731.57

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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.