Home / 1,528,880.81-2,109,856.88-840,564.39

Finding the Fourth Proportional to 1,528,880.81, 2,109,856.88 and 840,564.39

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Solution

The fourth proportional to 1,528,880.81, 2,109,856.88 and 840,564.39 is: 1,159,979.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528,880.81 : 2,109,856.88 = 840,564.39 : x
  2. Step 2: Convert to fraction form
    1,528,880.81/2,109,856.88 = 840,564.39/x
  3. Step 3: Cross multiply
    1,528,880.81x = 2,109,856.88 × 840,564.39
  4. Step 4: Simplify right side
    1,528,880.81x = 1,773,470,561,324.50
  5. Step 5: Solve for x
    x = 1,773,470,561,324.50/1,528,880.81
  6. Step 6: Final answer
    x = 1,159,979.61

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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.