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Finding the Fourth Proportional to 528,097.60, 728,774.86 and 286,380.10

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Solution

The fourth proportional to 528,097.60, 728,774.86 and 286,380.10 is: 395,204.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,097.60 : 728,774.86 = 286,380.10 : x
  2. Step 2: Convert to fraction form
    528,097.60/728,774.86 = 286,380.10/x
  3. Step 3: Cross multiply
    528,097.60x = 728,774.86 × 286,380.10
  4. Step 4: Simplify right side
    528,097.60x = 208,706,617,284.29
  5. Step 5: Solve for x
    x = 208,706,617,284.29/528,097.60
  6. Step 6: Final answer
    x = 395,204.63

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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.