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Finding the Fourth Proportional to 579,623.20, 780,003 and 579,623.20

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Solution

The fourth proportional to 579,623.20, 780,003 and 579,623.20 is: 780,003

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,623.20 : 780,003 = 579,623.20 : x
  2. Step 2: Convert to fraction form
    579,623.20/780,003 = 579,623.20/x
  3. Step 3: Cross multiply
    579,623.20x = 780,003 × 579,623.20
  4. Step 4: Simplify right side
    579,623.20x = 452,107,834,869.60
  5. Step 5: Solve for x
    x = 452,107,834,869.60/579,623.20
  6. Step 6: Final answer
    x = 780,003

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.