Home / 663,880.32-916,150.68-377,400.36

Finding the Fourth Proportional to 663,880.32, 916,150.68 and 377,400.36

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Solution

The fourth proportional to 663,880.32, 916,150.68 and 377,400.36 is: 520,810.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,880.32 : 916,150.68 = 377,400.36 : x
  2. Step 2: Convert to fraction form
    663,880.32/916,150.68 = 377,400.36/x
  3. Step 3: Cross multiply
    663,880.32x = 916,150.68 × 377,400.36
  4. Step 4: Simplify right side
    663,880.32x = 345,755,596,446.25
  5. Step 5: Solve for x
    x = 345,755,596,446.25/663,880.32
  6. Step 6: Final answer
    x = 520,810.13

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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.