Home / 783,504,496.80-1,176,161,871.60-420,707,440.80

Finding the Fourth Proportional to 783,504,496.80, 1,176,161,871.60 and 420,707,440.80

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Solution

The fourth proportional to 783,504,496.80, 1,176,161,871.60 and 420,707,440.80 is: 631,547,174.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,504,496.80 : 1,176,161,871.60 = 420,707,440.80 : x
  2. Step 2: Convert to fraction form
    783,504,496.80/1,176,161,871.60 = 420,707,440.80/x
  3. Step 3: Cross multiply
    783,504,496.80x = 1,176,161,871.60 × 420,707,440.80
  4. Step 4: Simplify right side
    783,504,496.80x = 494,820,050,967,374,144
  5. Step 5: Solve for x
    x = 494,820,050,967,374,144/783,504,496.80
  6. Step 6: Final answer
    x = 631,547,174.25

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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.