Home / 880,768.89-1,215,420.39-498,798.41

Finding the Fourth Proportional to 880,768.89, 1,215,420.39 and 498,798.41

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Solution

The fourth proportional to 880,768.89, 1,215,420.39 and 498,798.41 is: 688,318.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,768.89 : 1,215,420.39 = 498,798.41 : x
  2. Step 2: Convert to fraction form
    880,768.89/1,215,420.39 = 498,798.41/x
  3. Step 3: Cross multiply
    880,768.89x = 1,215,420.39 × 498,798.41
  4. Step 4: Simplify right side
    880,768.89x = 606,249,751,936.48
  5. Step 5: Solve for x
    x = 606,249,751,936.48/880,768.89
  6. Step 6: Final answer
    x = 688,318.76

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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.