Home / 1,059,839.49-1,590,285.10-420,129.69

Finding the Fourth Proportional to 1,059,839.49, 1,590,285.10 and 420,129.69

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Solution

The fourth proportional to 1,059,839.49, 1,590,285.10 and 420,129.69 is: 630,402.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,059,839.49 : 1,590,285.10 = 420,129.69 : x
  2. Step 2: Convert to fraction form
    1,059,839.49/1,590,285.10 = 420,129.69/x
  3. Step 3: Cross multiply
    1,059,839.49x = 1,590,285.10 × 420,129.69
  4. Step 4: Simplify right side
    1,059,839.49x = 668,125,979,848.47
  5. Step 5: Solve for x
    x = 668,125,979,848.47/1,059,839.49
  6. Step 6: Final answer
    x = 630,402.99

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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.