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Finding the Fourth Proportional to 630,831.27, 870,859.58 and 401,616.39

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Solution

The fourth proportional to 630,831.27, 870,859.58 and 401,616.39 is: 554,429.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,831.27 : 870,859.58 = 401,616.39 : x
  2. Step 2: Convert to fraction form
    630,831.27/870,859.58 = 401,616.39/x
  3. Step 3: Cross multiply
    630,831.27x = 870,859.58 × 401,616.39
  4. Step 4: Simplify right side
    630,831.27x = 349,751,478,708.43
  5. Step 5: Solve for x
    x = 349,751,478,708.43/630,831.27
  6. Step 6: Final answer
    x = 554,429.52

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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.