Home / 948,153.72-1,421,934.12-316,919.91

Finding the Fourth Proportional to 948,153.72, 1,421,934.12 and 316,919.91

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Solution

The fourth proportional to 948,153.72, 1,421,934.12 and 316,919.91 is: 475,280.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    948,153.72 : 1,421,934.12 = 316,919.91 : x
  2. Step 2: Convert to fraction form
    948,153.72/1,421,934.12 = 316,919.91/x
  3. Step 3: Cross multiply
    948,153.72x = 1,421,934.12 × 316,919.91
  4. Step 4: Simplify right side
    948,153.72x = 450,639,233,336.33
  5. Step 5: Solve for x
    x = 450,639,233,336.33/948,153.72
  6. Step 6: Final answer
    x = 475,280.77

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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.