Home / 643,712.40-966,204.20-483,230.34

Finding the Fourth Proportional to 643,712.40, 966,204.20 and 483,230.34

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Solution

The fourth proportional to 643,712.40, 966,204.20 and 483,230.34 is: 725,322.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,712.40 : 966,204.20 = 483,230.34 : x
  2. Step 2: Convert to fraction form
    643,712.40/966,204.20 = 483,230.34/x
  3. Step 3: Cross multiply
    643,712.40x = 966,204.20 × 483,230.34
  4. Step 4: Simplify right side
    643,712.40x = 466,899,184,075.43
  5. Step 5: Solve for x
    x = 466,899,184,075.43/643,712.40
  6. Step 6: Final answer
    x = 725,322.65

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Double scale
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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.