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Finding the Fourth Proportional to 556,868.76, 768,345.76 and 339,074.88

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Solution

The fourth proportional to 556,868.76, 768,345.76 and 339,074.88 is: 467,842.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,868.76 : 768,345.76 = 339,074.88 : x
  2. Step 2: Convert to fraction form
    556,868.76/768,345.76 = 339,074.88/x
  3. Step 3: Cross multiply
    556,868.76x = 768,345.76 × 339,074.88
  4. Step 4: Simplify right side
    556,868.76x = 260,526,746,370.51
  5. Step 5: Solve for x
    x = 260,526,746,370.51/556,868.76
  6. Step 6: Final answer
    x = 467,842.27

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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.