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Finding the Fourth Proportional to 559,963.40, 839,945.10 and 402,499.40

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Solution

The fourth proportional to 559,963.40, 839,945.10 and 402,499.40 is: 603,749.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,963.40 : 839,945.10 = 402,499.40 : x
  2. Step 2: Convert to fraction form
    559,963.40/839,945.10 = 402,499.40/x
  3. Step 3: Cross multiply
    559,963.40x = 839,945.10 × 402,499.40
  4. Step 4: Simplify right side
    559,963.40x = 338,077,398,782.94
  5. Step 5: Solve for x
    x = 338,077,398,782.94/559,963.40
  6. Step 6: Final answer
    x = 603,749.10

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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.