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Finding the Fourth Proportional to 807,842.40, 1,211,763.60 and 525,832.80

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Solution

The fourth proportional to 807,842.40, 1,211,763.60 and 525,832.80 is: 788,749.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,842.40 : 1,211,763.60 = 525,832.80 : x
  2. Step 2: Convert to fraction form
    807,842.40/1,211,763.60 = 525,832.80/x
  3. Step 3: Cross multiply
    807,842.40x = 1,211,763.60 × 525,832.80
  4. Step 4: Simplify right side
    807,842.40x = 637,185,046,726.08
  5. Step 5: Solve for x
    x = 637,185,046,726.08/807,842.40
  6. Step 6: Final answer
    x = 788,749.20

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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.