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Finding the Fourth Proportional to 559,420.80, 771,998.40 and 304,771.20

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Solution

The fourth proportional to 559,420.80, 771,998.40 and 304,771.20 is: 420,583.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,420.80 : 771,998.40 = 304,771.20 : x
  2. Step 2: Convert to fraction form
    559,420.80/771,998.40 = 304,771.20/x
  3. Step 3: Cross multiply
    559,420.80x = 771,998.40 × 304,771.20
  4. Step 4: Simplify right side
    559,420.80x = 235,282,878,766.08
  5. Step 5: Solve for x
    x = 235,282,878,766.08/559,420.80
  6. Step 6: Final answer
    x = 420,583.00

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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.