Home / 771,509.88-1,064,700.78-440,359.20

Finding the Fourth Proportional to 771,509.88, 1,064,700.78 and 440,359.20

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Solution

The fourth proportional to 771,509.88, 1,064,700.78 and 440,359.20 is: 607,705.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,509.88 : 1,064,700.78 = 440,359.20 : x
  2. Step 2: Convert to fraction form
    771,509.88/1,064,700.78 = 440,359.20/x
  3. Step 3: Cross multiply
    771,509.88x = 1,064,700.78 × 440,359.20
  4. Step 4: Simplify right side
    771,509.88x = 468,850,783,720.18
  5. Step 5: Solve for x
    x = 468,850,783,720.18/771,509.88
  6. Step 6: Final answer
    x = 607,705.48

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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.