Home / 677,624.23-935,150.76-405,639.49

Finding the Fourth Proportional to 677,624.23, 935,150.76 and 405,639.49

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Solution

The fourth proportional to 677,624.23, 935,150.76 and 405,639.49 is: 559,800.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,624.23 : 935,150.76 = 405,639.49 : x
  2. Step 2: Convert to fraction form
    677,624.23/935,150.76 = 405,639.49/x
  3. Step 3: Cross multiply
    677,624.23x = 935,150.76 × 405,639.49
  4. Step 4: Simplify right side
    677,624.23x = 379,334,075,331.32
  5. Step 5: Solve for x
    x = 379,334,075,331.32/677,624.23
  6. Step 6: Final answer
    x = 559,800.05

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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.