Home / 912,999.70-1,369,499.55-853,513.30

Finding the Fourth Proportional to 912,999.70, 1,369,499.55 and 853,513.30

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Solution

The fourth proportional to 912,999.70, 1,369,499.55 and 853,513.30 is: 1,280,269.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,999.70 : 1,369,499.55 = 853,513.30 : x
  2. Step 2: Convert to fraction form
    912,999.70/1,369,499.55 = 853,513.30/x
  3. Step 3: Cross multiply
    912,999.70x = 1,369,499.55 × 853,513.30
  4. Step 4: Simplify right side
    912,999.70x = 1,168,886,080,269.02
  5. Step 5: Solve for x
    x = 1,168,886,080,269.02/912,999.70
  6. Step 6: Final answer
    x = 1,280,269.95

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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.