Home / 920,839.10-1,384,211.10-656,430.80

Finding the Fourth Proportional to 920,839.10, 1,384,211.10 and 656,430.80

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Solution

The fourth proportional to 920,839.10, 1,384,211.10 and 656,430.80 is: 986,750.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,839.10 : 1,384,211.10 = 656,430.80 : x
  2. Step 2: Convert to fraction form
    920,839.10/1,384,211.10 = 656,430.80/x
  3. Step 3: Cross multiply
    920,839.10x = 1,384,211.10 × 656,430.80
  4. Step 4: Simplify right side
    920,839.10x = 908,638,799,741.88
  5. Step 5: Solve for x
    x = 908,638,799,741.88/920,839.10
  6. Step 6: Final answer
    x = 986,750.89

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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.