Home / 859,400.52-1,287,838.99-432,349.35

Finding the Fourth Proportional to 859,400.52, 1,287,838.99 and 432,349.35

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Solution

The fourth proportional to 859,400.52, 1,287,838.99 and 432,349.35 is: 647,889.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,400.52 : 1,287,838.99 = 432,349.35 : x
  2. Step 2: Convert to fraction form
    859,400.52/1,287,838.99 = 432,349.35/x
  3. Step 3: Cross multiply
    859,400.52x = 1,287,838.99 × 432,349.35
  4. Step 4: Simplify right side
    859,400.52x = 556,796,353,186.29
  5. Step 5: Solve for x
    x = 556,796,353,186.29/859,400.52
  6. Step 6: Final answer
    x = 647,889.25

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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.