Home / 999,667.51-1,379,506.85-570,085.90

Finding the Fourth Proportional to 999,667.51, 1,379,506.85 and 570,085.90

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Solution

The fourth proportional to 999,667.51, 1,379,506.85 and 570,085.90 is: 786,698.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,667.51 : 1,379,506.85 = 570,085.90 : x
  2. Step 2: Convert to fraction form
    999,667.51/1,379,506.85 = 570,085.90/x
  3. Step 3: Cross multiply
    999,667.51x = 1,379,506.85 × 570,085.90
  4. Step 4: Simplify right side
    999,667.51x = 786,437,399,977.04
  5. Step 5: Solve for x
    x = 786,437,399,977.04/999,667.51
  6. Step 6: Final answer
    x = 786,698.97

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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.