Home / 780,087.86-1,169,899.95-330,802.10

Finding the Fourth Proportional to 780,087.86, 1,169,899.95 and 330,802.10

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Solution

The fourth proportional to 780,087.86, 1,169,899.95 and 330,802.10 is: 496,104.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,087.86 : 1,169,899.95 = 330,802.10 : x
  2. Step 2: Convert to fraction form
    780,087.86/1,169,899.95 = 330,802.10/x
  3. Step 3: Cross multiply
    780,087.86x = 1,169,899.95 × 330,802.10
  4. Step 4: Simplify right side
    780,087.86x = 387,005,360,249.90
  5. Step 5: Solve for x
    x = 387,005,360,249.90/780,087.86
  6. Step 6: Final answer
    x = 496,104.84

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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.