Home / 1,087,385.40-1,629,474.30-788,495.40

Finding the Fourth Proportional to 1,087,385.40, 1,629,474.30 and 788,495.40

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Solution

The fourth proportional to 1,087,385.40, 1,629,474.30 and 788,495.40 is: 1,181,580.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,385.40 : 1,629,474.30 = 788,495.40 : x
  2. Step 2: Convert to fraction form
    1,087,385.40/1,629,474.30 = 788,495.40/x
  3. Step 3: Cross multiply
    1,087,385.40x = 1,629,474.30 × 788,495.40
  4. Step 4: Simplify right side
    1,087,385.40x = 1,284,832,989,968.22
  5. Step 5: Solve for x
    x = 1,284,832,989,968.22/1,087,385.40
  6. Step 6: Final answer
    x = 1,181,580.14

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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.