Home / 771,426.32-1,157,215.59-265,920.71

Finding the Fourth Proportional to 771,426.32, 1,157,215.59 and 265,920.71

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Solution

The fourth proportional to 771,426.32, 1,157,215.59 and 265,920.71 is: 398,907.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,426.32 : 1,157,215.59 = 265,920.71 : x
  2. Step 2: Convert to fraction form
    771,426.32/1,157,215.59 = 265,920.71/x
  3. Step 3: Cross multiply
    771,426.32x = 1,157,215.59 × 265,920.71
  4. Step 4: Simplify right side
    771,426.32x = 307,727,585,529.79
  5. Step 5: Solve for x
    x = 307,727,585,529.79/771,426.32
  6. Step 6: Final answer
    x = 398,907.30

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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.