Home / 727,904.28-1,091,117.70-278,509.80

Finding the Fourth Proportional to 727,904.28, 1,091,117.70 and 278,509.80

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Solution

The fourth proportional to 727,904.28, 1,091,117.70 and 278,509.80 is: 417,482.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,904.28 : 1,091,117.70 = 278,509.80 : x
  2. Step 2: Convert to fraction form
    727,904.28/1,091,117.70 = 278,509.80/x
  3. Step 3: Cross multiply
    727,904.28x = 1,091,117.70 × 278,509.80
  4. Step 4: Simplify right side
    727,904.28x = 303,886,972,403.46
  5. Step 5: Solve for x
    x = 303,886,972,403.46/727,904.28
  6. Step 6: Final answer
    x = 417,482.05

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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.