Home / 809,651.69-1,117,417.85-470,119.94

Finding the Fourth Proportional to 809,651.69, 1,117,417.85 and 470,119.94

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Solution

The fourth proportional to 809,651.69, 1,117,417.85 and 470,119.94 is: 648,822.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,651.69 : 1,117,417.85 = 470,119.94 : x
  2. Step 2: Convert to fraction form
    809,651.69/1,117,417.85 = 470,119.94/x
  3. Step 3: Cross multiply
    809,651.69x = 1,117,417.85 × 470,119.94
  4. Step 4: Simplify right side
    809,651.69x = 525,320,412,596.93
  5. Step 5: Solve for x
    x = 525,320,412,596.93/809,651.69
  6. Step 6: Final answer
    x = 648,822.72

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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.