Home / 859,890.99-1,290,354.89-299,319.15

Finding the Fourth Proportional to 859,890.99, 1,290,354.89 and 299,319.15

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Solution

The fourth proportional to 859,890.99, 1,290,354.89 and 299,319.15 is: 449,159.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,890.99 : 1,290,354.89 = 299,319.15 : x
  2. Step 2: Convert to fraction form
    859,890.99/1,290,354.89 = 299,319.15/x
  3. Step 3: Cross multiply
    859,890.99x = 1,290,354.89 × 299,319.15
  4. Step 4: Simplify right side
    859,890.99x = 386,227,927,376.55
  5. Step 5: Solve for x
    x = 386,227,927,376.55/859,890.99
  6. Step 6: Final answer
    x = 449,159.17

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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.