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Finding the Fourth Proportional to 432,853.10, 649,279.65 and 401,360.30

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Solution

The fourth proportional to 432,853.10, 649,279.65 and 401,360.30 is: 602,040.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,853.10 : 649,279.65 = 401,360.30 : x
  2. Step 2: Convert to fraction form
    432,853.10/649,279.65 = 401,360.30/x
  3. Step 3: Cross multiply
    432,853.10x = 649,279.65 × 401,360.30
  4. Step 4: Simplify right side
    432,853.10x = 260,595,075,107.90
  5. Step 5: Solve for x
    x = 260,595,075,107.90/432,853.10
  6. Step 6: Final answer
    x = 602,040.45

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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.