Home / 1,387,225.50-2,080,838.25-389,953.50

Finding the Fourth Proportional to 1,387,225.50, 2,080,838.25 and 389,953.50

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Solution

The fourth proportional to 1,387,225.50, 2,080,838.25 and 389,953.50 is: 584,930.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,225.50 : 2,080,838.25 = 389,953.50 : x
  2. Step 2: Convert to fraction form
    1,387,225.50/2,080,838.25 = 389,953.50/x
  3. Step 3: Cross multiply
    1,387,225.50x = 2,080,838.25 × 389,953.50
  4. Step 4: Simplify right side
    1,387,225.50x = 811,430,158,521.38
  5. Step 5: Solve for x
    x = 811,430,158,521.38/1,387,225.50
  6. Step 6: Final answer
    x = 584,930.25

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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.