Home / 1,528,418.50-2,109,239.20-840,154

Finding the Fourth Proportional to 1,528,418.50, 2,109,239.20 and 840,154

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Solution

The fourth proportional to 1,528,418.50, 2,109,239.20 and 840,154 is: 1,159,424.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528,418.50 : 2,109,239.20 = 840,154 : x
  2. Step 2: Convert to fraction form
    1,528,418.50/2,109,239.20 = 840,154/x
  3. Step 3: Cross multiply
    1,528,418.50x = 2,109,239.20 × 840,154
  4. Step 4: Simplify right side
    1,528,418.50x = 1,772,085,750,836.80
  5. Step 5: Solve for x
    x = 1,772,085,750,836.80/1,528,418.50
  6. Step 6: Final answer
    x = 1,159,424.43

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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.