Home / 828,153.36-1,142,892.72-505,811.28

Finding the Fourth Proportional to 828,153.36, 1,142,892.72 and 505,811.28

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Solution

The fourth proportional to 828,153.36, 1,142,892.72 and 505,811.28 is: 698,044.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,153.36 : 1,142,892.72 = 505,811.28 : x
  2. Step 2: Convert to fraction form
    828,153.36/1,142,892.72 = 505,811.28/x
  3. Step 3: Cross multiply
    828,153.36x = 1,142,892.72 × 505,811.28
  4. Step 4: Simplify right side
    828,153.36x = 578,088,029,605.88
  5. Step 5: Solve for x
    x = 578,088,029,605.88/828,153.36
  6. Step 6: Final answer
    x = 698,044.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.