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Finding the Fourth Proportional to 666,467.80, 999,701.70 and 292,490.80

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Solution

The fourth proportional to 666,467.80, 999,701.70 and 292,490.80 is: 438,736.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,467.80 : 999,701.70 = 292,490.80 : x
  2. Step 2: Convert to fraction form
    666,467.80/999,701.70 = 292,490.80/x
  3. Step 3: Cross multiply
    666,467.80x = 999,701.70 × 292,490.80
  4. Step 4: Simplify right side
    666,467.80x = 292,403,549,994.36
  5. Step 5: Solve for x
    x = 292,403,549,994.36/666,467.80
  6. Step 6: Final answer
    x = 438,736.20

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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.