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Finding the Fourth Proportional to 909,881, 1,255,627.10 and 501,986.12

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Solution

The fourth proportional to 909,881, 1,255,627.10 and 501,986.12 is: 692,736.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,881 : 1,255,627.10 = 501,986.12 : x
  2. Step 2: Convert to fraction form
    909,881/1,255,627.10 = 501,986.12/x
  3. Step 3: Cross multiply
    909,881x = 1,255,627.10 × 501,986.12
  4. Step 4: Simplify right side
    909,881x = 630,307,376,095.85
  5. Step 5: Solve for x
    x = 630,307,376,095.85/909,881
  6. Step 6: Final answer
    x = 692,736.06

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1.5x scale

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.