Home / 771,530.85-1,064,729.72-440,380.10

Finding the Fourth Proportional to 771,530.85, 1,064,729.72 and 440,380.10

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Solution

The fourth proportional to 771,530.85, 1,064,729.72 and 440,380.10 is: 607,734.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,530.85 : 1,064,729.72 = 440,380.10 : x
  2. Step 2: Convert to fraction form
    771,530.85/1,064,729.72 = 440,380.10/x
  3. Step 3: Cross multiply
    771,530.85x = 1,064,729.72 × 440,380.10
  4. Step 4: Simplify right side
    771,530.85x = 468,885,776,343.87
  5. Step 5: Solve for x
    x = 468,885,776,343.87/771,530.85
  6. Step 6: Final answer
    x = 607,734.32

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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.