Home / 726,938.80-1,003,205.10-404,628.40

Finding the Fourth Proportional to 726,938.80, 1,003,205.10 and 404,628.40

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Solution

The fourth proportional to 726,938.80, 1,003,205.10 and 404,628.40 is: 558,403.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,938.80 : 1,003,205.10 = 404,628.40 : x
  2. Step 2: Convert to fraction form
    726,938.80/1,003,205.10 = 404,628.40/x
  3. Step 3: Cross multiply
    726,938.80x = 1,003,205.10 × 404,628.40
  4. Step 4: Simplify right side
    726,938.80x = 405,925,274,484.84
  5. Step 5: Solve for x
    x = 405,925,274,484.84/726,938.80
  6. Step 6: Final answer
    x = 558,403.64

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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.