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Finding the Fourth Proportional to 666,088.40, 999,132.60 and 328,998.80

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Solution

The fourth proportional to 666,088.40, 999,132.60 and 328,998.80 is: 493,498.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,088.40 : 999,132.60 = 328,998.80 : x
  2. Step 2: Convert to fraction form
    666,088.40/999,132.60 = 328,998.80/x
  3. Step 3: Cross multiply
    666,088.40x = 999,132.60 × 328,998.80
  4. Step 4: Simplify right side
    666,088.40x = 328,713,426,440.88
  5. Step 5: Solve for x
    x = 328,713,426,440.88/666,088.40
  6. Step 6: Final answer
    x = 493,498.20

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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.