Home / 643,927.40-966,812.70-363,991.40

Finding the Fourth Proportional to 643,927.40, 966,812.70 and 363,991.40

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Solution

The fourth proportional to 643,927.40, 966,812.70 and 363,991.40 is: 546,508.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,927.40 : 966,812.70 = 363,991.40 : x
  2. Step 2: Convert to fraction form
    643,927.40/966,812.70 = 363,991.40/x
  3. Step 3: Cross multiply
    643,927.40x = 966,812.70 × 363,991.40
  4. Step 4: Simplify right side
    643,927.40x = 351,911,508,210.78
  5. Step 5: Solve for x
    x = 351,911,508,210.78/643,927.40
  6. Step 6: Final answer
    x = 546,508.05

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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.