Home / 931,783.91-1,397,707.14-257,808.83

Finding the Fourth Proportional to 931,783.91, 1,397,707.14 and 257,808.83

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Solution

The fourth proportional to 931,783.91, 1,397,707.14 and 257,808.83 is: 386,721.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,783.91 : 1,397,707.14 = 257,808.83 : x
  2. Step 2: Convert to fraction form
    931,783.91/1,397,707.14 = 257,808.83/x
  3. Step 3: Cross multiply
    931,783.91x = 1,397,707.14 × 257,808.83
  4. Step 4: Simplify right side
    931,783.91x = 360,341,236,424.29
  5. Step 5: Solve for x
    x = 360,341,236,424.29/931,783.91
  6. Step 6: Final answer
    x = 386,721.89

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1.5x scale

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.