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Finding the Fourth Proportional to 478,636.10, 660,514.51 and 263,776.34

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Solution

The fourth proportional to 478,636.10, 660,514.51 and 263,776.34 is: 364,009.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,636.10 : 660,514.51 = 263,776.34 : x
  2. Step 2: Convert to fraction form
    478,636.10/660,514.51 = 263,776.34/x
  3. Step 3: Cross multiply
    478,636.10x = 660,514.51 × 263,776.34
  4. Step 4: Simplify right side
    478,636.10x = 174,228,096,746.56
  5. Step 5: Solve for x
    x = 174,228,096,746.56/478,636.10
  6. Step 6: Final answer
    x = 364,009.52

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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.