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Finding the Fourth Proportional to 543,988.53, 815,482.40 and 291,442.77

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Solution

The fourth proportional to 543,988.53, 815,482.40 and 291,442.77 is: 436,896.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,988.53 : 815,482.40 = 291,442.77 : x
  2. Step 2: Convert to fraction form
    543,988.53/815,482.40 = 291,442.77/x
  3. Step 3: Cross multiply
    543,988.53x = 815,482.40 × 291,442.77
  4. Step 4: Simplify right side
    543,988.53x = 237,666,448,085.03
  5. Step 5: Solve for x
    x = 237,666,448,085.03/543,988.53
  6. Step 6: Final answer
    x = 436,896.06

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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.