Home / 919,264.80-1,378,897.20-666,010.20

Finding the Fourth Proportional to 919,264.80, 1,378,897.20 and 666,010.20

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Solution

The fourth proportional to 919,264.80, 1,378,897.20 and 666,010.20 is: 999,015.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,264.80 : 1,378,897.20 = 666,010.20 : x
  2. Step 2: Convert to fraction form
    919,264.80/1,378,897.20 = 666,010.20/x
  3. Step 3: Cross multiply
    919,264.80x = 1,378,897.20 × 666,010.20
  4. Step 4: Simplify right side
    919,264.80x = 918,359,599,951.44
  5. Step 5: Solve for x
    x = 918,359,599,951.44/919,264.80
  6. Step 6: Final answer
    x = 999,015.30

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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.