Home / 819,187.40-1,227,815.75-369,381.65

Finding the Fourth Proportional to 819,187.40, 1,227,815.75 and 369,381.65

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Solution

The fourth proportional to 819,187.40, 1,227,815.75 and 369,381.65 is: 553,637.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,187.40 : 1,227,815.75 = 369,381.65 : x
  2. Step 2: Convert to fraction form
    819,187.40/1,227,815.75 = 369,381.65/x
  3. Step 3: Cross multiply
    819,187.40x = 1,227,815.75 × 369,381.65
  4. Step 4: Simplify right side
    819,187.40x = 453,532,602,415.36
  5. Step 5: Solve for x
    x = 453,532,602,415.36/819,187.40
  6. Step 6: Final answer
    x = 553,637.18

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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.