Home / 909,878.63-1,255,623.86-501,983.78

Finding the Fourth Proportional to 909,878.63, 1,255,623.86 and 501,983.78

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Solution

The fourth proportional to 909,878.63, 1,255,623.86 and 501,983.78 is: 692,732.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,878.63 : 1,255,623.86 = 501,983.78 : x
  2. Step 2: Convert to fraction form
    909,878.63/1,255,623.86 = 501,983.78/x
  3. Step 3: Cross multiply
    909,878.63x = 1,255,623.86 × 501,983.78
  4. Step 4: Simplify right side
    909,878.63x = 630,302,802,712.95
  5. Step 5: Solve for x
    x = 630,302,802,712.95/909,878.63
  6. Step 6: Final answer
    x = 692,732.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.