Home / 521,031-719,022.78-294,671.64

Finding the Fourth Proportional to 521,031, 719,022.78 and 294,671.64

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Solution

The fourth proportional to 521,031, 719,022.78 and 294,671.64 is: 406,646.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,031 : 719,022.78 = 294,671.64 : x
  2. Step 2: Convert to fraction form
    521,031/719,022.78 = 294,671.64/x
  3. Step 3: Cross multiply
    521,031x = 719,022.78 × 294,671.64
  4. Step 4: Simplify right side
    521,031x = 211,875,621,779.96
  5. Step 5: Solve for x
    x = 211,875,621,779.96/521,031
  6. Step 6: Final answer
    x = 406,646.86

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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.