Home / 861,970.69-1,189,519.55-499,604.74

Finding the Fourth Proportional to 861,970.69, 1,189,519.55 and 499,604.74

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Solution

The fourth proportional to 861,970.69, 1,189,519.55 and 499,604.74 is: 689,454.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,970.69 : 1,189,519.55 = 499,604.74 : x
  2. Step 2: Convert to fraction form
    861,970.69/1,189,519.55 = 499,604.74/x
  3. Step 3: Cross multiply
    861,970.69x = 1,189,519.55 × 499,604.74
  4. Step 4: Simplify right side
    861,970.69x = 594,289,600,030.84
  5. Step 5: Solve for x
    x = 594,289,600,030.84/861,970.69
  6. Step 6: Final answer
    x = 689,454.53

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Double scale
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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.