Home / 787,210.40-1,086,260.64-442,979.84

Finding the Fourth Proportional to 787,210.40, 1,086,260.64 and 442,979.84

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Solution

The fourth proportional to 787,210.40, 1,086,260.64 and 442,979.84 is: 611,261.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,210.40 : 1,086,260.64 = 442,979.84 : x
  2. Step 2: Convert to fraction form
    787,210.40/1,086,260.64 = 442,979.84/x
  3. Step 3: Cross multiply
    787,210.40x = 1,086,260.64 × 442,979.84
  4. Step 4: Simplify right side
    787,210.40x = 481,191,564,505.50
  5. Step 5: Solve for x
    x = 481,191,564,505.50/787,210.40
  6. Step 6: Final answer
    x = 611,261.70

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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.