Home / 521,278.86-719,325.06-291,783.59

Finding the Fourth Proportional to 521,278.86, 719,325.06 and 291,783.59

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Solution

The fourth proportional to 521,278.86, 719,325.06 and 291,783.59 is: 402,639.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,278.86 : 719,325.06 = 291,783.59 : x
  2. Step 2: Convert to fraction form
    521,278.86/719,325.06 = 291,783.59/x
  3. Step 3: Cross multiply
    521,278.86x = 719,325.06 × 291,783.59
  4. Step 4: Simplify right side
    521,278.86x = 209,887,248,383.77
  5. Step 5: Solve for x
    x = 209,887,248,383.77/521,278.86
  6. Step 6: Final answer
    x = 402,639.09

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Similar ratio
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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.