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Finding the Fourth Proportional to 653,242.37, 979,482.11 and 253,415.91

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Solution

The fourth proportional to 653,242.37, 979,482.11 and 253,415.91 is: 379,975.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,242.37 : 979,482.11 = 253,415.91 : x
  2. Step 2: Convert to fraction form
    653,242.37/979,482.11 = 253,415.91/x
  3. Step 3: Cross multiply
    653,242.37x = 979,482.11 × 253,415.91
  4. Step 4: Simplify right side
    653,242.37x = 248,216,348,967.29
  5. Step 5: Solve for x
    x = 248,216,348,967.29/653,242.37
  6. Step 6: Final answer
    x = 379,975.89

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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.