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Finding the Fourth Proportional to 898,009.80, 1,347,014.70 and 661,813.80

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Solution

The fourth proportional to 898,009.80, 1,347,014.70 and 661,813.80 is: 992,720.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,009.80 : 1,347,014.70 = 661,813.80 : x
  2. Step 2: Convert to fraction form
    898,009.80/1,347,014.70 = 661,813.80/x
  3. Step 3: Cross multiply
    898,009.80x = 1,347,014.70 × 661,813.80
  4. Step 4: Simplify right side
    898,009.80x = 891,472,917,262.86
  5. Step 5: Solve for x
    x = 891,472,917,262.86/898,009.80
  6. Step 6: Final answer
    x = 992,720.70

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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.