Home / 693,053.12-956,416.64-387,142.39

Finding the Fourth Proportional to 693,053.12, 956,416.64 and 387,142.39

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Solution

The fourth proportional to 693,053.12, 956,416.64 and 387,142.39 is: 534,258.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,053.12 : 956,416.64 = 387,142.39 : x
  2. Step 2: Convert to fraction form
    693,053.12/956,416.64 = 387,142.39/x
  3. Step 3: Cross multiply
    693,053.12x = 956,416.64 × 387,142.39
  4. Step 4: Simplify right side
    693,053.12x = 370,269,423,845.37
  5. Step 5: Solve for x
    x = 370,269,423,845.37/693,053.12
  6. Step 6: Final answer
    x = 534,258.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.