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Finding the Fourth Proportional to 560,661.90, 840,131.70 and 380,513.22

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Solution

The fourth proportional to 560,661.90, 840,131.70 and 380,513.22 is: 570,185.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,661.90 : 840,131.70 = 380,513.22 : x
  2. Step 2: Convert to fraction form
    560,661.90/840,131.70 = 380,513.22/x
  3. Step 3: Cross multiply
    560,661.90x = 840,131.70 × 380,513.22
  4. Step 4: Simplify right side
    560,661.90x = 319,681,218,391.07
  5. Step 5: Solve for x
    x = 319,681,218,391.07/560,661.90
  6. Step 6: Final answer
    x = 570,185.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.