Home / 931,421.10-1,397,131.65-257,501.10

Finding the Fourth Proportional to 931,421.10, 1,397,131.65 and 257,501.10

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Solution

The fourth proportional to 931,421.10, 1,397,131.65 and 257,501.10 is: 386,251.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,421.10 : 1,397,131.65 = 257,501.10 : x
  2. Step 2: Convert to fraction form
    931,421.10/1,397,131.65 = 257,501.10/x
  3. Step 3: Cross multiply
    931,421.10x = 1,397,131.65 × 257,501.10
  4. Step 4: Simplify right side
    931,421.10x = 359,762,936,719.82
  5. Step 5: Solve for x
    x = 359,762,936,719.82/931,421.10
  6. Step 6: Final answer
    x = 386,251.65

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Half scale
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Double scale
Find fourth proportional to 931,422.10, 1,397,133.15 and 257,502.10
Similar ratio
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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.