Home / 1,438,609.34-2,157,913.40-427,726.91

Finding the Fourth Proportional to 1,438,609.34, 2,157,913.40 and 427,726.91

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Solution

The fourth proportional to 1,438,609.34, 2,157,913.40 and 427,726.91 is: 641,590.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,609.34 : 2,157,913.40 = 427,726.91 : x
  2. Step 2: Convert to fraction form
    1,438,609.34/2,157,913.40 = 427,726.91/x
  3. Step 3: Cross multiply
    1,438,609.34x = 2,157,913.40 × 427,726.91
  4. Step 4: Simplify right side
    1,438,609.34x = 922,997,617,701.39
  5. Step 5: Solve for x
    x = 922,997,617,701.39/1,438,609.34
  6. Step 6: Final answer
    x = 641,590.18

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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.