Home / 1,222,278.12-1,686,607-678,436.83

Finding the Fourth Proportional to 1,222,278.12, 1,686,607 and 678,436.83

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Solution

The fourth proportional to 1,222,278.12, 1,686,607 and 678,436.83 is: 936,166.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,278.12 : 1,686,607 = 678,436.83 : x
  2. Step 2: Convert to fraction form
    1,222,278.12/1,686,607 = 678,436.83/x
  3. Step 3: Cross multiply
    1,222,278.12x = 1,686,607 × 678,436.83
  4. Step 4: Simplify right side
    1,222,278.12x = 1,144,256,306,535.81
  5. Step 5: Solve for x
    x = 1,144,256,306,535.81/1,222,278.12
  6. Step 6: Final answer
    x = 936,166.89

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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.