Home / 559,421.80-771,999.78-304,772.20

Finding the Fourth Proportional to 559,421.80, 771,999.78 and 304,772.20

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Solution

The fourth proportional to 559,421.80, 771,999.78 and 304,772.20 is: 420,584.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,421.80 : 771,999.78 = 304,772.20 : x
  2. Step 2: Convert to fraction form
    559,421.80/771,999.78 = 304,772.20/x
  3. Step 3: Cross multiply
    559,421.80x = 771,999.78 × 304,772.20
  4. Step 4: Simplify right side
    559,421.80x = 235,284,071,350.12
  5. Step 5: Solve for x
    x = 235,284,071,350.12/559,421.80
  6. Step 6: Final answer
    x = 420,584.38

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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.