Home / 780,001.80-1,170,002.70-425,707.80

Finding the Fourth Proportional to 780,001.80, 1,170,002.70 and 425,707.80

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Solution

The fourth proportional to 780,001.80, 1,170,002.70 and 425,707.80 is: 638,561.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,001.80 : 1,170,002.70 = 425,707.80 : x
  2. Step 2: Convert to fraction form
    780,001.80/1,170,002.70 = 425,707.80/x
  3. Step 3: Cross multiply
    780,001.80x = 1,170,002.70 × 425,707.80
  4. Step 4: Simplify right side
    780,001.80x = 498,079,275,411.06
  5. Step 5: Solve for x
    x = 498,079,275,411.06/780,001.80
  6. Step 6: Final answer
    x = 638,561.70

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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.