Home / 912,863.94-1,369,420.46-380,260.41

Finding the Fourth Proportional to 912,863.94, 1,369,420.46 and 380,260.41

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Solution

The fourth proportional to 912,863.94, 1,369,420.46 and 380,260.41 is: 570,442.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,863.94 : 1,369,420.46 = 380,260.41 : x
  2. Step 2: Convert to fraction form
    912,863.94/1,369,420.46 = 380,260.41/x
  3. Step 3: Cross multiply
    912,863.94x = 1,369,420.46 × 380,260.41
  4. Step 4: Simplify right side
    912,863.94x = 520,736,385,581.99
  5. Step 5: Solve for x
    x = 520,736,385,581.99/912,863.94
  6. Step 6: Final answer
    x = 570,442.50

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Double scale
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1.5x scale

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.