Home / 643,261.59-963,674.46-429,384.60

Finding the Fourth Proportional to 643,261.59, 963,674.46 and 429,384.60

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Solution

The fourth proportional to 643,261.59, 963,674.46 and 429,384.60 is: 643,263.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,261.59 : 963,674.46 = 429,384.60 : x
  2. Step 2: Convert to fraction form
    643,261.59/963,674.46 = 429,384.60/x
  3. Step 3: Cross multiply
    643,261.59x = 963,674.46 × 429,384.60
  4. Step 4: Simplify right side
    643,261.59x = 413,786,972,537.32
  5. Step 5: Solve for x
    x = 413,786,972,537.32/643,261.59
  6. Step 6: Final answer
    x = 643,263.92

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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.