Home / 913,290.32-1,260,321.77-505,391.88

Finding the Fourth Proportional to 913,290.32, 1,260,321.77 and 505,391.88

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Solution

The fourth proportional to 913,290.32, 1,260,321.77 and 505,391.88 is: 697,430.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,290.32 : 1,260,321.77 = 505,391.88 : x
  2. Step 2: Convert to fraction form
    913,290.32/1,260,321.77 = 505,391.88/x
  3. Step 3: Cross multiply
    913,290.32x = 1,260,321.77 × 505,391.88
  4. Step 4: Simplify right side
    913,290.32x = 636,956,386,218.27
  5. Step 5: Solve for x
    x = 636,956,386,218.27/913,290.32
  6. Step 6: Final answer
    x = 697,430.35

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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.