Home / 1,128,735.51-1,557,211.57-645,041.15

Finding the Fourth Proportional to 1,128,735.51, 1,557,211.57 and 645,041.15

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Solution

The fourth proportional to 1,128,735.51, 1,557,211.57 and 645,041.15 is: 889,903.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,735.51 : 1,557,211.57 = 645,041.15 : x
  2. Step 2: Convert to fraction form
    1,128,735.51/1,557,211.57 = 645,041.15/x
  3. Step 3: Cross multiply
    1,128,735.51x = 1,557,211.57 × 645,041.15
  4. Step 4: Simplify right side
    1,128,735.51x = 1,004,465,547,106.30
  5. Step 5: Solve for x
    x = 1,004,465,547,106.30/1,128,735.51
  6. Step 6: Final answer
    x = 889,903.38

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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.