Home / 1,227,036.81-1,840,653.63-428,300.67

Finding the Fourth Proportional to 1,227,036.81, 1,840,653.63 and 428,300.67

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Solution

The fourth proportional to 1,227,036.81, 1,840,653.63 and 428,300.67 is: 642,485.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,227,036.81 : 1,840,653.63 = 428,300.67 : x
  2. Step 2: Convert to fraction form
    1,227,036.81/1,840,653.63 = 428,300.67/x
  3. Step 3: Cross multiply
    1,227,036.81x = 1,840,653.63 × 428,300.67
  4. Step 4: Simplify right side
    1,227,036.81x = 788,353,182,966.93
  5. Step 5: Solve for x
    x = 788,353,182,966.93/1,227,036.81
  6. Step 6: Final answer
    x = 642,485.36

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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.