Home / 1,078,426.40-1,616,602.80-838,407.20

Finding the Fourth Proportional to 1,078,426.40, 1,616,602.80 and 838,407.20

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Solution

The fourth proportional to 1,078,426.40, 1,616,602.80 and 838,407.20 is: 1,256,804.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,426.40 : 1,616,602.80 = 838,407.20 : x
  2. Step 2: Convert to fraction form
    1,078,426.40/1,616,602.80 = 838,407.20/x
  3. Step 3: Cross multiply
    1,078,426.40x = 1,616,602.80 × 838,407.20
  4. Step 4: Simplify right side
    1,078,426.40x = 1,355,371,427,060.16
  5. Step 5: Solve for x
    x = 1,355,371,427,060.16/1,078,426.40
  6. Step 6: Final answer
    x = 1,256,804.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.