Home / 819,013.16-1,228,521.56-369,211.11

Finding the Fourth Proportional to 819,013.16, 1,228,521.56 and 369,211.11

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Solution

The fourth proportional to 819,013.16, 1,228,521.56 and 369,211.11 is: 553,817.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,013.16 : 1,228,521.56 = 369,211.11 : x
  2. Step 2: Convert to fraction form
    819,013.16/1,228,521.56 = 369,211.11/x
  3. Step 3: Cross multiply
    819,013.16x = 1,228,521.56 × 369,211.11
  4. Step 4: Simplify right side
    819,013.16x = 453,583,806,980.48
  5. Step 5: Solve for x
    x = 453,583,806,980.48/819,013.16
  6. Step 6: Final answer
    x = 553,817.49

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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.