Home / 820,017.84-1,230,573.96-287,538.48

Finding the Fourth Proportional to 820,017.84, 1,230,573.96 and 287,538.48

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Solution

The fourth proportional to 820,017.84, 1,230,573.96 and 287,538.48 is: 431,499.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,017.84 : 1,230,573.96 = 287,538.48 : x
  2. Step 2: Convert to fraction form
    820,017.84/1,230,573.96 = 287,538.48/x
  3. Step 3: Cross multiply
    820,017.84x = 1,230,573.96 × 287,538.48
  4. Step 4: Simplify right side
    820,017.84x = 353,837,365,985.98
  5. Step 5: Solve for x
    x = 353,837,365,985.98/820,017.84
  6. Step 6: Final answer
    x = 431,499.60

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1.5x scale

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.