Home / 758,825.12-1,047,178.32-419,290.40

Finding the Fourth Proportional to 758,825.12, 1,047,178.32 and 419,290.40

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Solution

The fourth proportional to 758,825.12, 1,047,178.32 and 419,290.40 is: 578,620.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,825.12 : 1,047,178.32 = 419,290.40 : x
  2. Step 2: Convert to fraction form
    758,825.12/1,047,178.32 = 419,290.40/x
  3. Step 3: Cross multiply
    758,825.12x = 1,047,178.32 × 419,290.40
  4. Step 4: Simplify right side
    758,825.12x = 439,071,816,664.13
  5. Step 5: Solve for x
    x = 439,071,816,664.13/758,825.12
  6. Step 6: Final answer
    x = 578,620.56

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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.