Home / 920,047.32-1,378,778.79-784,409.91

Finding the Fourth Proportional to 920,047.32, 1,378,778.79 and 784,409.91

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Solution

The fourth proportional to 920,047.32, 1,378,778.79 and 784,409.91 is: 1,175,513.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,047.32 : 1,378,778.79 = 784,409.91 : x
  2. Step 2: Convert to fraction form
    920,047.32/1,378,778.79 = 784,409.91/x
  3. Step 3: Cross multiply
    920,047.32x = 1,378,778.79 × 784,409.91
  4. Step 4: Simplify right side
    920,047.32x = 1,081,527,746,573.81
  5. Step 5: Solve for x
    x = 1,081,527,746,573.81/920,047.32
  6. Step 6: Final answer
    x = 1,175,513.18

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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.