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Finding the Fourth Proportional to 539,961.36, 745,154.55 and 313,606.86

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Solution

The fourth proportional to 539,961.36, 745,154.55 and 313,606.86 is: 432,782.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,961.36 : 745,154.55 = 313,606.86 : x
  2. Step 2: Convert to fraction form
    539,961.36/745,154.55 = 313,606.86/x
  3. Step 3: Cross multiply
    539,961.36x = 745,154.55 × 313,606.86
  4. Step 4: Simplify right side
    539,961.36x = 233,685,578,640.21
  5. Step 5: Solve for x
    x = 233,685,578,640.21/539,961.36
  6. Step 6: Final answer
    x = 432,782.04

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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.