Home / 663,910.32-916,192.04-377,430.40

Finding the Fourth Proportional to 663,910.32, 916,192.04 and 377,430.40

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Solution

The fourth proportional to 663,910.32, 916,192.04 and 377,430.40 is: 520,851.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,910.32 : 916,192.04 = 377,430.40 : x
  2. Step 2: Convert to fraction form
    663,910.32/916,192.04 = 377,430.40/x
  3. Step 3: Cross multiply
    663,910.32x = 916,192.04 × 377,430.40
  4. Step 4: Simplify right side
    663,910.32x = 345,798,728,134.02
  5. Step 5: Solve for x
    x = 345,798,728,134.02/663,910.32
  6. Step 6: Final answer
    x = 520,851.56

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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.