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Finding the Fourth Proportional to 911,672.10, 1,367,508.15 and 612,296.10

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Solution

The fourth proportional to 911,672.10, 1,367,508.15 and 612,296.10 is: 918,444.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,672.10 : 1,367,508.15 = 612,296.10 : x
  2. Step 2: Convert to fraction form
    911,672.10/1,367,508.15 = 612,296.10/x
  3. Step 3: Cross multiply
    911,672.10x = 1,367,508.15 × 612,296.10
  4. Step 4: Simplify right side
    911,672.10x = 837,319,906,963.22
  5. Step 5: Solve for x
    x = 837,319,906,963.22/911,672.10
  6. Step 6: Final answer
    x = 918,444.15

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1.5x scale

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.