Home / 2,178,000.78-3,005,714.10-1,197,981.27

Finding the Fourth Proportional to 2,178,000.78, 3,005,714.10 and 1,197,981.27

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Solution

The fourth proportional to 2,178,000.78, 3,005,714.10 and 1,197,981.27 is: 1,653,254.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178,000.78 : 3,005,714.10 = 1,197,981.27 : x
  2. Step 2: Convert to fraction form
    2,178,000.78/3,005,714.10 = 1,197,981.27/x
  3. Step 3: Cross multiply
    2,178,000.78x = 3,005,714.10 × 1,197,981.27
  4. Step 4: Simplify right side
    2,178,000.78x = 3,600,789,199,267.34
  5. Step 5: Solve for x
    x = 3,600,789,199,267.34/2,178,000.78
  6. Step 6: Final answer
    x = 1,653,254.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.