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Finding the Fourth Proportional to 424,919.81, 586,431.69 and 317,303.00

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Solution

The fourth proportional to 424,919.81, 586,431.69 and 317,303.00 is: 437,909.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,919.81 : 586,431.69 = 317,303.00 : x
  2. Step 2: Convert to fraction form
    424,919.81/586,431.69 = 317,303.00/x
  3. Step 3: Cross multiply
    424,919.81x = 586,431.69 × 317,303.00
  4. Step 4: Simplify right side
    424,919.81x = 186,076,537,692.65
  5. Step 5: Solve for x
    x = 186,076,537,692.65/424,919.81
  6. Step 6: Final answer
    x = 437,909.78

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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.