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Finding the Fourth Proportional to 859,435.10, 1,289,347.05 and 504,266.30

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Solution

The fourth proportional to 859,435.10, 1,289,347.05 and 504,266.30 is: 756,513.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,435.10 : 1,289,347.05 = 504,266.30 : x
  2. Step 2: Convert to fraction form
    859,435.10/1,289,347.05 = 504,266.30/x
  3. Step 3: Cross multiply
    859,435.10x = 1,289,347.05 × 504,266.30
  4. Step 4: Simplify right side
    859,435.10x = 650,174,266,319.42
  5. Step 5: Solve for x
    x = 650,174,266,319.42/859,435.10
  6. Step 6: Final answer
    x = 756,513.51

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Double scale
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1.5x scale

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.