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Finding the Fourth Proportional to 520,352.72, 780,645.72 and 216,751.76

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Solution

The fourth proportional to 520,352.72, 780,645.72 and 216,751.76 is: 325,176.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,352.72 : 780,645.72 = 216,751.76 : x
  2. Step 2: Convert to fraction form
    520,352.72/780,645.72 = 216,751.76/x
  3. Step 3: Cross multiply
    520,352.72x = 780,645.72 × 216,751.76
  4. Step 4: Simplify right side
    520,352.72x = 169,206,333,746.47
  5. Step 5: Solve for x
    x = 169,206,333,746.47/520,352.72
  6. Step 6: Final answer
    x = 325,176.23

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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.