Home / 1,128,099.42-1,691,307.54-678,714.98

Finding the Fourth Proportional to 1,128,099.42, 1,691,307.54 and 678,714.98

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Solution

The fourth proportional to 1,128,099.42, 1,691,307.54 and 678,714.98 is: 1,017,566.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,099.42 : 1,691,307.54 = 678,714.98 : x
  2. Step 2: Convert to fraction form
    1,128,099.42/1,691,307.54 = 678,714.98/x
  3. Step 3: Cross multiply
    1,128,099.42x = 1,691,307.54 × 678,714.98
  4. Step 4: Simplify right side
    1,128,099.42x = 1,147,915,763,184.95
  5. Step 5: Solve for x
    x = 1,147,915,763,184.95/1,128,099.42
  6. Step 6: Final answer
    x = 1,017,566.13

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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.