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Finding the Fourth Proportional to 500,315.46, 690,435.48 and 270,872.70

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Solution

The fourth proportional to 500,315.46, 690,435.48 and 270,872.70 is: 373,804.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,315.46 : 690,435.48 = 270,872.70 : x
  2. Step 2: Convert to fraction form
    500,315.46/690,435.48 = 270,872.70/x
  3. Step 3: Cross multiply
    500,315.46x = 690,435.48 × 270,872.70
  4. Step 4: Simplify right side
    500,315.46x = 187,020,122,643.40
  5. Step 5: Solve for x
    x = 187,020,122,643.40/500,315.46
  6. Step 6: Final answer
    x = 373,804.40

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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.