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Finding the Fourth Proportional to 672,702.63, 932,336.88 and 660,105.51

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Solution

The fourth proportional to 672,702.63, 932,336.88 and 660,105.51 is: 914,877.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,702.63 : 932,336.88 = 660,105.51 : x
  2. Step 2: Convert to fraction form
    672,702.63/932,336.88 = 660,105.51/x
  3. Step 3: Cross multiply
    672,702.63x = 932,336.88 × 660,105.51
  4. Step 4: Simplify right side
    672,702.63x = 615,440,711,664.21
  5. Step 5: Solve for x
    x = 615,440,711,664.21/672,702.63
  6. Step 6: Final answer
    x = 914,877.81

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.