Home / 631,606.20-947,946.90-257,897.40

Finding the Fourth Proportional to 631,606.20, 947,946.90 and 257,897.40

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Solution

The fourth proportional to 631,606.20, 947,946.90 and 257,897.40 is: 387,065.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,606.20 : 947,946.90 = 257,897.40 : x
  2. Step 2: Convert to fraction form
    631,606.20/947,946.90 = 257,897.40/x
  3. Step 3: Cross multiply
    631,606.20x = 947,946.90 × 257,897.40
  4. Step 4: Simplify right side
    631,606.20x = 244,473,040,848.06
  5. Step 5: Solve for x
    x = 244,473,040,848.06/631,606.20
  6. Step 6: Final answer
    x = 387,065.61

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Double scale
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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.