Home / 851,485.50-1,277,228.25-346,321.31

Finding the Fourth Proportional to 851,485.50, 1,277,228.25 and 346,321.31

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Solution

The fourth proportional to 851,485.50, 1,277,228.25 and 346,321.31 is: 519,481.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,485.50 : 1,277,228.25 = 346,321.31 : x
  2. Step 2: Convert to fraction form
    851,485.50/1,277,228.25 = 346,321.31/x
  3. Step 3: Cross multiply
    851,485.50x = 1,277,228.25 × 346,321.31
  4. Step 4: Simplify right side
    851,485.50x = 442,331,354,322.87
  5. Step 5: Solve for x
    x = 442,331,354,322.87/851,485.50
  6. Step 6: Final answer
    x = 519,481.96

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Half scale
Find fourth proportional to 1,702,971, 2,554,456.50 and 692,642.61
Double scale
Find fourth proportional to 851,486.50, 1,277,229.75 and 346,322.31
Similar ratio
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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.