Home / 1,273,235.72-1,909,448.52-420,148.37

Finding the Fourth Proportional to 1,273,235.72, 1,909,448.52 and 420,148.37

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Solution

The fourth proportional to 1,273,235.72, 1,909,448.52 and 420,148.37 is: 630,088.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273,235.72 : 1,909,448.52 = 420,148.37 : x
  2. Step 2: Convert to fraction form
    1,273,235.72/1,909,448.52 = 420,148.37/x
  3. Step 3: Cross multiply
    1,273,235.72x = 1,909,448.52 × 420,148.37
  4. Step 4: Simplify right side
    1,273,235.72x = 802,251,683,276.91
  5. Step 5: Solve for x
    x = 802,251,683,276.91/1,273,235.72
  6. Step 6: Final answer
    x = 630,088.89

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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.