Home / 1,528,685.10-2,109,703.05-916,861.32

Finding the Fourth Proportional to 1,528,685.10, 2,109,703.05 and 916,861.32

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Solution

The fourth proportional to 1,528,685.10, 2,109,703.05 and 916,861.32 is: 1,265,339.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528,685.10 : 2,109,703.05 = 916,861.32 : x
  2. Step 2: Convert to fraction form
    1,528,685.10/2,109,703.05 = 916,861.32/x
  3. Step 3: Cross multiply
    1,528,685.10x = 2,109,703.05 × 916,861.32
  4. Step 4: Simplify right side
    1,528,685.10x = 1,934,305,123,231.03
  5. Step 5: Solve for x
    x = 1,934,305,123,231.03/1,528,685.10
  6. Step 6: Final answer
    x = 1,265,339.16

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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.