Home / 771,646.36-1,064,609.28-449,288.22

Finding the Fourth Proportional to 771,646.36, 1,064,609.28 and 449,288.22

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Solution

The fourth proportional to 771,646.36, 1,064,609.28 and 449,288.22 is: 619,864.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,646.36 : 1,064,609.28 = 449,288.22 : x
  2. Step 2: Convert to fraction form
    771,646.36/1,064,609.28 = 449,288.22/x
  3. Step 3: Cross multiply
    771,646.36x = 1,064,609.28 × 449,288.22
  4. Step 4: Simplify right side
    771,646.36x = 478,316,408,406.68
  5. Step 5: Solve for x
    x = 478,316,408,406.68/771,646.36
  6. Step 6: Final answer
    x = 619,864.79

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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.