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Finding the Fourth Proportional to 502,285.17, 692,877.46 and 318,186.59

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Solution

The fourth proportional to 502,285.17, 692,877.46 and 318,186.59 is: 438,922.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,285.17 : 692,877.46 = 318,186.59 : x
  2. Step 2: Convert to fraction form
    502,285.17/692,877.46 = 318,186.59/x
  3. Step 3: Cross multiply
    502,285.17x = 692,877.46 × 318,186.59
  4. Step 4: Simplify right side
    502,285.17x = 220,464,312,622.01
  5. Step 5: Solve for x
    x = 220,464,312,622.01/502,285.17
  6. Step 6: Final answer
    x = 438,922.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.