Home / 839,420.57-1,158,366.63-457,439.15

Finding the Fourth Proportional to 839,420.57, 1,158,366.63 and 457,439.15

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Solution

The fourth proportional to 839,420.57, 1,158,366.63 and 457,439.15 is: 631,247.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,420.57 : 1,158,366.63 = 457,439.15 : x
  2. Step 2: Convert to fraction form
    839,420.57/1,158,366.63 = 457,439.15/x
  3. Step 3: Cross multiply
    839,420.57x = 1,158,366.63 × 457,439.15
  4. Step 4: Simplify right side
    839,420.57x = 529,882,246,615.56
  5. Step 5: Solve for x
    x = 529,882,246,615.56/839,420.57
  6. Step 6: Final answer
    x = 631,247.63

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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.