Home / 921,345.84-1,271,458.49-513,438.75

Finding the Fourth Proportional to 921,345.84, 1,271,458.49 and 513,438.75

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Solution

The fourth proportional to 921,345.84, 1,271,458.49 and 513,438.75 is: 708,546.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,345.84 : 1,271,458.49 = 513,438.75 : x
  2. Step 2: Convert to fraction form
    921,345.84/1,271,458.49 = 513,438.75/x
  3. Step 3: Cross multiply
    921,345.84x = 1,271,458.49 × 513,438.75
  4. Step 4: Simplify right side
    921,345.84x = 652,816,055,215.29
  5. Step 5: Solve for x
    x = 652,816,055,215.29/921,345.84
  6. Step 6: Final answer
    x = 708,546.16

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Double scale
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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.