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Finding the Fourth Proportional to 528,205.60, 790,955.70 and 291,285.46

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Solution

The fourth proportional to 528,205.60, 790,955.70 and 291,285.46 is: 436,182.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,205.60 : 790,955.70 = 291,285.46 : x
  2. Step 2: Convert to fraction form
    528,205.60/790,955.70 = 291,285.46/x
  3. Step 3: Cross multiply
    528,205.60x = 790,955.70 × 291,285.46
  4. Step 4: Simplify right side
    528,205.60x = 230,393,894,914.12
  5. Step 5: Solve for x
    x = 230,393,894,914.12/528,205.60
  6. Step 6: Final answer
    x = 436,182.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.