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Finding the Fourth Proportional to 559,987.20, 839,980.80 and 336,038.40

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Solution

The fourth proportional to 559,987.20, 839,980.80 and 336,038.40 is: 504,057.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,987.20 : 839,980.80 = 336,038.40 : x
  2. Step 2: Convert to fraction form
    559,987.20/839,980.80 = 336,038.40/x
  3. Step 3: Cross multiply
    559,987.20x = 839,980.80 × 336,038.40
  4. Step 4: Simplify right side
    559,987.20x = 282,265,804,062.72
  5. Step 5: Solve for x
    x = 282,265,804,062.72/559,987.20
  6. Step 6: Final answer
    x = 504,057.60

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.