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Finding the Fourth Proportional to 528,627.74, 729,506.98 and 286,910.32

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Solution

The fourth proportional to 528,627.74, 729,506.98 and 286,910.32 is: 395,936.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,627.74 : 729,506.98 = 286,910.32 : x
  2. Step 2: Convert to fraction form
    528,627.74/729,506.98 = 286,910.32/x
  3. Step 3: Cross multiply
    528,627.74x = 729,506.98 × 286,910.32
  4. Step 4: Simplify right side
    528,627.74x = 209,303,081,074.03
  5. Step 5: Solve for x
    x = 209,303,081,074.03/528,627.74
  6. Step 6: Final answer
    x = 395,936.62

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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.