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Finding the Fourth Proportional to 556,039.65, 767,335.49 and 301,390.77

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Solution

The fourth proportional to 556,039.65, 767,335.49 and 301,390.77 is: 415,919.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,039.65 : 767,335.49 = 301,390.77 : x
  2. Step 2: Convert to fraction form
    556,039.65/767,335.49 = 301,390.77/x
  3. Step 3: Cross multiply
    556,039.65x = 767,335.49 × 301,390.77
  4. Step 4: Simplify right side
    556,039.65x = 231,267,832,672.47
  5. Step 5: Solve for x
    x = 231,267,832,672.47/556,039.65
  6. Step 6: Final answer
    x = 415,919.68

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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.