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Finding the Fourth Proportional to 653,979, 979,544.52 and 316,307.42

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Solution

The fourth proportional to 653,979, 979,544.52 and 316,307.42 is: 473,772.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,979 : 979,544.52 = 316,307.42 : x
  2. Step 2: Convert to fraction form
    653,979/979,544.52 = 316,307.42/x
  3. Step 3: Cross multiply
    653,979x = 979,544.52 × 316,307.42
  4. Step 4: Simplify right side
    653,979x = 309,837,199,896.34
  5. Step 5: Solve for x
    x = 309,837,199,896.34/653,979
  6. Step 6: Final answer
    x = 473,772.40

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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.