Home / 1,329,421.70-1,993,714.28-430,654.91

Finding the Fourth Proportional to 1,329,421.70, 1,993,714.28 and 430,654.91

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Solution

The fourth proportional to 1,329,421.70, 1,993,714.28 and 430,654.91 is: 645,846.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,421.70 : 1,993,714.28 = 430,654.91 : x
  2. Step 2: Convert to fraction form
    1,329,421.70/1,993,714.28 = 430,654.91/x
  3. Step 3: Cross multiply
    1,329,421.70x = 1,993,714.28 × 430,654.91
  4. Step 4: Simplify right side
    1,329,421.70x = 858,602,831,697.27
  5. Step 5: Solve for x
    x = 858,602,831,697.27/1,329,421.70
  6. Step 6: Final answer
    x = 645,846.86

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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.