Home / 1,390,586.56-1,919,036.64-907,460.80

Finding the Fourth Proportional to 1,390,586.56, 1,919,036.64 and 907,460.80

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Solution

The fourth proportional to 1,390,586.56, 1,919,036.64 and 907,460.80 is: 1,252,313.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,586.56 : 1,919,036.64 = 907,460.80 : x
  2. Step 2: Convert to fraction form
    1,390,586.56/1,919,036.64 = 907,460.80/x
  3. Step 3: Cross multiply
    1,390,586.56x = 1,919,036.64 × 907,460.80
  4. Step 4: Simplify right side
    1,390,586.56x = 1,741,450,524,563.71
  5. Step 5: Solve for x
    x = 1,741,450,524,563.71/1,390,586.56
  6. Step 6: Final answer
    x = 1,252,313.65

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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.