Home / 920,861.68-1,270,985.16-618,880.72

Finding the Fourth Proportional to 920,861.68, 1,270,985.16 and 618,880.72

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Solution

The fourth proportional to 920,861.68, 1,270,985.16 and 618,880.72 is: 854,187.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,861.68 : 1,270,985.16 = 618,880.72 : x
  2. Step 2: Convert to fraction form
    920,861.68/1,270,985.16 = 618,880.72/x
  3. Step 3: Cross multiply
    920,861.68x = 1,270,985.16 × 618,880.72
  4. Step 4: Simplify right side
    920,861.68x = 786,588,210,930.12
  5. Step 5: Solve for x
    x = 786,588,210,930.12/920,861.68
  6. Step 6: Final answer
    x = 854,187.15

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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.