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Finding the Fourth Proportional to 803,307.78, 1,108,259.01 and 512,930.07

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Solution

The fourth proportional to 803,307.78, 1,108,259.01 and 512,930.07 is: 707,648.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,307.78 : 1,108,259.01 = 512,930.07 : x
  2. Step 2: Convert to fraction form
    803,307.78/1,108,259.01 = 512,930.07/x
  3. Step 3: Cross multiply
    803,307.78x = 1,108,259.01 × 512,930.07
  4. Step 4: Simplify right side
    803,307.78x = 568,459,371,577.43
  5. Step 5: Solve for x
    x = 568,459,371,577.43/803,307.78
  6. Step 6: Final answer
    x = 707,648.28

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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.