Home / 1,187,069.95-1,638,187.02-728,437.93

Finding the Fourth Proportional to 1,187,069.95, 1,638,187.02 and 728,437.93

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Solution

The fourth proportional to 1,187,069.95, 1,638,187.02 and 728,437.93 is: 1,005,263.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,069.95 : 1,638,187.02 = 728,437.93 : x
  2. Step 2: Convert to fraction form
    1,187,069.95/1,638,187.02 = 728,437.93/x
  3. Step 3: Cross multiply
    1,187,069.95x = 1,638,187.02 × 728,437.93
  4. Step 4: Simplify right side
    1,187,069.95x = 1,193,317,561,801.67
  5. Step 5: Solve for x
    x = 1,193,317,561,801.67/1,187,069.95
  6. Step 6: Final answer
    x = 1,005,263.05

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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.