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Finding the Fourth Proportional to 838,886.80, 1,255,705.80 and 660,427.60

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Solution

The fourth proportional to 838,886.80, 1,255,705.80 and 660,427.60 is: 988,575.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,886.80 : 1,255,705.80 = 660,427.60 : x
  2. Step 2: Convert to fraction form
    838,886.80/1,255,705.80 = 660,427.60/x
  3. Step 3: Cross multiply
    838,886.80x = 1,255,705.80 × 660,427.60
  4. Step 4: Simplify right side
    838,886.80x = 829,302,767,800.08
  5. Step 5: Solve for x
    x = 829,302,767,800.08/838,886.80
  6. Step 6: Final answer
    x = 988,575.30

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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.