Home / 1,686,436.80-2,528,780.40-620,930.40

Finding the Fourth Proportional to 1,686,436.80, 2,528,780.40 and 620,930.40

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Solution

The fourth proportional to 1,686,436.80, 2,528,780.40 and 620,930.40 is: 931,073.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686,436.80 : 2,528,780.40 = 620,930.40 : x
  2. Step 2: Convert to fraction form
    1,686,436.80/2,528,780.40 = 620,930.40/x
  3. Step 3: Cross multiply
    1,686,436.80x = 2,528,780.40 × 620,930.40
  4. Step 4: Simplify right side
    1,686,436.80x = 1,570,196,625,284.16
  5. Step 5: Solve for x
    x = 1,570,196,625,284.16/1,686,436.80
  6. Step 6: Final answer
    x = 931,073.51

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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.