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Finding the Fourth Proportional to 612,769.93, 845,610.30 and 340,831.94

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Solution

The fourth proportional to 612,769.93, 845,610.30 and 340,831.94 is: 470,341.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,769.93 : 845,610.30 = 340,831.94 : x
  2. Step 2: Convert to fraction form
    612,769.93/845,610.30 = 340,831.94/x
  3. Step 3: Cross multiply
    612,769.93x = 845,610.30 × 340,831.94
  4. Step 4: Simplify right side
    612,769.93x = 288,210,994,804.93
  5. Step 5: Solve for x
    x = 288,210,994,804.93/612,769.93
  6. Step 6: Final answer
    x = 470,341.28

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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.