Home / 860,511.60-1,290,848.35-253,300.31

Finding the Fourth Proportional to 860,511.60, 1,290,848.35 and 253,300.31

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Solution

The fourth proportional to 860,511.60, 1,290,848.35 and 253,300.31 is: 379,974.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,511.60 : 1,290,848.35 = 253,300.31 : x
  2. Step 2: Convert to fraction form
    860,511.60/1,290,848.35 = 253,300.31/x
  3. Step 3: Cross multiply
    860,511.60x = 1,290,848.35 × 253,300.31
  4. Step 4: Simplify right side
    860,511.60x = 326,972,292,707.14
  5. Step 5: Solve for x
    x = 326,972,292,707.14/860,511.60
  6. Step 6: Final answer
    x = 379,974.30

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1.5x scale

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.