Home / 912,991.63-1,368,597.43-380,664.89

Finding the Fourth Proportional to 912,991.63, 1,368,597.43 and 380,664.89

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Solution

The fourth proportional to 912,991.63, 1,368,597.43 and 380,664.89 is: 570,626.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,991.63 : 1,368,597.43 = 380,664.89 : x
  2. Step 2: Convert to fraction form
    912,991.63/1,368,597.43 = 380,664.89/x
  3. Step 3: Cross multiply
    912,991.63x = 1,368,597.43 × 380,664.89
  4. Step 4: Simplify right side
    912,991.63x = 520,976,990,145.23
  5. Step 5: Solve for x
    x = 520,976,990,145.23/912,991.63
  6. Step 6: Final answer
    x = 570,626.25

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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.