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Finding the Fourth Proportional to 660,451.83, 990,800.76 and 211,285.77

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Solution

The fourth proportional to 660,451.83, 990,800.76 and 211,285.77 is: 316,968.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,451.83 : 990,800.76 = 211,285.77 : x
  2. Step 2: Convert to fraction form
    660,451.83/990,800.76 = 211,285.77/x
  3. Step 3: Cross multiply
    660,451.83x = 990,800.76 × 211,285.77
  4. Step 4: Simplify right side
    660,451.83x = 209,342,097,381.52
  5. Step 5: Solve for x
    x = 209,342,097,381.52/660,451.83
  6. Step 6: Final answer
    x = 316,968.00

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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.