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Finding the Fourth Proportional to 423,920.10, 635,880.15 and 366,839.40

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Solution

The fourth proportional to 423,920.10, 635,880.15 and 366,839.40 is: 550,259.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,920.10 : 635,880.15 = 366,839.40 : x
  2. Step 2: Convert to fraction form
    423,920.10/635,880.15 = 366,839.40/x
  3. Step 3: Cross multiply
    423,920.10x = 635,880.15 × 366,839.40
  4. Step 4: Simplify right side
    423,920.10x = 233,265,892,697.91
  5. Step 5: Solve for x
    x = 233,265,892,697.91/423,920.10
  6. Step 6: Final answer
    x = 550,259.10

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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.