Home / 1,087,785.09-1,501,055.40-628,929.10

Finding the Fourth Proportional to 1,087,785.09, 1,501,055.40 and 628,929.10

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Solution

The fourth proportional to 1,087,785.09, 1,501,055.40 and 628,929.10 is: 867,871.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,785.09 : 1,501,055.40 = 628,929.10 : x
  2. Step 2: Convert to fraction form
    1,087,785.09/1,501,055.40 = 628,929.10/x
  3. Step 3: Cross multiply
    1,087,785.09x = 1,501,055.40 × 628,929.10
  4. Step 4: Simplify right side
    1,087,785.09x = 944,057,411,122.22
  5. Step 5: Solve for x
    x = 944,057,411,122.22/1,087,785.09
  6. Step 6: Final answer
    x = 867,871.26

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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.