Home / 919,048.80-1,378,616.40-287,983.20

Finding the Fourth Proportional to 919,048.80, 1,378,616.40 and 287,983.20

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Solution

The fourth proportional to 919,048.80, 1,378,616.40 and 287,983.20 is: 431,988.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,048.80 : 1,378,616.40 = 287,983.20 : x
  2. Step 2: Convert to fraction form
    919,048.80/1,378,616.40 = 287,983.20/x
  3. Step 3: Cross multiply
    919,048.80x = 1,378,616.40 × 287,983.20
  4. Step 4: Simplify right side
    919,048.80x = 397,018,362,444.48
  5. Step 5: Solve for x
    x = 397,018,362,444.48/919,048.80
  6. Step 6: Final answer
    x = 431,988.34

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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.