Home / 758,988-1,047,389.40-419,448.96

Finding the Fourth Proportional to 758,988, 1,047,389.40 and 419,448.96

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Solution

The fourth proportional to 758,988, 1,047,389.40 and 419,448.96 is: 578,831.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,988 : 1,047,389.40 = 419,448.96 : x
  2. Step 2: Convert to fraction form
    758,988/1,047,389.40 = 419,448.96/x
  3. Step 3: Cross multiply
    758,988x = 1,047,389.40 × 419,448.96
  4. Step 4: Simplify right side
    758,988x = 439,326,394,545.02
  5. Step 5: Solve for x
    x = 439,326,394,545.02/758,988
  6. Step 6: Final answer
    x = 578,831.81

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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.