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Finding the Fourth Proportional to 690,437.18, 952,802.40 and 404,012.48

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Solution

The fourth proportional to 690,437.18, 952,802.40 and 404,012.48 is: 557,536.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,437.18 : 952,802.40 = 404,012.48 : x
  2. Step 2: Convert to fraction form
    690,437.18/952,802.40 = 404,012.48/x
  3. Step 3: Cross multiply
    690,437.18x = 952,802.40 × 404,012.48
  4. Step 4: Simplify right side
    690,437.18x = 384,944,060,573.95
  5. Step 5: Solve for x
    x = 384,944,060,573.95/690,437.18
  6. Step 6: Final answer
    x = 557,536.69

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1.5x scale

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.