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Finding the Fourth Proportional to 486,004.30, 729,006.45 and 432,860.20

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Solution

The fourth proportional to 486,004.30, 729,006.45 and 432,860.20 is: 649,290.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,004.30 : 729,006.45 = 432,860.20 : x
  2. Step 2: Convert to fraction form
    486,004.30/729,006.45 = 432,860.20/x
  3. Step 3: Cross multiply
    486,004.30x = 729,006.45 × 432,860.20
  4. Step 4: Simplify right side
    486,004.30x = 315,557,877,748.29
  5. Step 5: Solve for x
    x = 315,557,877,748.29/486,004.30
  6. Step 6: Final answer
    x = 649,290.30

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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.