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Finding the Fourth Proportional to 577,623.20, 866,434.80 and 486,384.80

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Solution

The fourth proportional to 577,623.20, 866,434.80 and 486,384.80 is: 729,577.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,623.20 : 866,434.80 = 486,384.80 : x
  2. Step 2: Convert to fraction form
    577,623.20/866,434.80 = 486,384.80/x
  3. Step 3: Cross multiply
    577,623.20x = 866,434.80 × 486,384.80
  4. Step 4: Simplify right side
    577,623.20x = 421,420,716,911.04
  5. Step 5: Solve for x
    x = 421,420,716,911.04/577,623.20
  6. Step 6: Final answer
    x = 729,577.20

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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.