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Finding the Fourth Proportional to 909,567, 1,255,185.45 and 501,706.89

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Solution

The fourth proportional to 909,567, 1,255,185.45 and 501,706.89 is: 692,346.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,567 : 1,255,185.45 = 501,706.89 : x
  2. Step 2: Convert to fraction form
    909,567/1,255,185.45 = 501,706.89/x
  3. Step 3: Cross multiply
    909,567x = 1,255,185.45 × 501,706.89
  4. Step 4: Simplify right side
    909,567x = 629,735,188,492.75
  5. Step 5: Solve for x
    x = 629,735,188,492.75/909,567
  6. Step 6: Final answer
    x = 692,346.13

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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.