Home / 990,285.69-1,485,252.99-450,415.85

Finding the Fourth Proportional to 990,285.69, 1,485,252.99 and 450,415.85

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Solution

The fourth proportional to 990,285.69, 1,485,252.99 and 450,415.85 is: 675,543.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,285.69 : 1,485,252.99 = 450,415.85 : x
  2. Step 2: Convert to fraction form
    990,285.69/1,485,252.99 = 450,415.85/x
  3. Step 3: Cross multiply
    990,285.69x = 1,485,252.99 × 450,415.85
  4. Step 4: Simplify right side
    990,285.69x = 668,981,487,955.89
  5. Step 5: Solve for x
    x = 668,981,487,955.89/990,285.69
  6. Step 6: Final answer
    x = 675,543.93

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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.