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Finding the Fourth Proportional to 904,405, 1,248,083.76 and 565,070.08

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Solution

The fourth proportional to 904,405, 1,248,083.76 and 565,070.08 is: 779,799.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    904,405 : 1,248,083.76 = 565,070.08 : x
  2. Step 2: Convert to fraction form
    904,405/1,248,083.76 = 565,070.08/x
  3. Step 3: Cross multiply
    904,405x = 1,248,083.76 × 565,070.08
  4. Step 4: Simplify right side
    904,405x = 705,254,790,109.90
  5. Step 5: Solve for x
    x = 705,254,790,109.90/904,405
  6. Step 6: Final answer
    x = 779,799.75

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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.