Home / 645,066.19-890,192.37-358,583.77

Finding the Fourth Proportional to 645,066.19, 890,192.37 and 358,583.77

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Solution

The fourth proportional to 645,066.19, 890,192.37 and 358,583.77 is: 494,846.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,066.19 : 890,192.37 = 358,583.77 : x
  2. Step 2: Convert to fraction form
    645,066.19/890,192.37 = 358,583.77/x
  3. Step 3: Cross multiply
    645,066.19x = 890,192.37 × 358,583.77
  4. Step 4: Simplify right side
    645,066.19x = 319,208,536,059.84
  5. Step 5: Solve for x
    x = 319,208,536,059.84/645,066.19
  6. Step 6: Final answer
    x = 494,846.17

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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.