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Finding the Fourth Proportional to 660,467.63, 911,445.54 and 358,661.63

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Solution

The fourth proportional to 660,467.63, 911,445.54 and 358,661.63 is: 494,953.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,467.63 : 911,445.54 = 358,661.63 : x
  2. Step 2: Convert to fraction form
    660,467.63/911,445.54 = 358,661.63/x
  3. Step 3: Cross multiply
    660,467.63x = 911,445.54 × 358,661.63
  4. Step 4: Simplify right side
    660,467.63x = 326,900,543,032.63
  5. Step 5: Solve for x
    x = 326,900,543,032.63/660,467.63
  6. Step 6: Final answer
    x = 494,953.16

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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.