Home / 631,436.16-947,504.16-257,430.24

Finding the Fourth Proportional to 631,436.16, 947,504.16 and 257,430.24

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Solution

The fourth proportional to 631,436.16, 947,504.16 and 257,430.24 is: 386,288.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,436.16 : 947,504.16 = 257,430.24 : x
  2. Step 2: Convert to fraction form
    631,436.16/947,504.16 = 257,430.24/x
  3. Step 3: Cross multiply
    631,436.16x = 947,504.16 × 257,430.24
  4. Step 4: Simplify right side
    631,436.16x = 243,916,223,309.80
  5. Step 5: Solve for x
    x = 243,916,223,309.80/631,436.16
  6. Step 6: Final answer
    x = 386,288.02

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Double scale
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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.