Home / 678,946.32-936,841.86-392,411.16

Finding the Fourth Proportional to 678,946.32, 936,841.86 and 392,411.16

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Solution

The fourth proportional to 678,946.32, 936,841.86 and 392,411.16 is: 541,467.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,946.32 : 936,841.86 = 392,411.16 : x
  2. Step 2: Convert to fraction form
    678,946.32/936,841.86 = 392,411.16/x
  3. Step 3: Cross multiply
    678,946.32x = 936,841.86 × 392,411.16
  4. Step 4: Simplify right side
    678,946.32x = 367,627,201,019.16
  5. Step 5: Solve for x
    x = 367,627,201,019.16/678,946.32
  6. Step 6: Final answer
    x = 541,467.26

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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.