Home / 678,312.80-936,075.24-423,811.56

Finding the Fourth Proportional to 678,312.80, 936,075.24 and 423,811.56

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Solution

The fourth proportional to 678,312.80, 936,075.24 and 423,811.56 is: 584,862.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,312.80 : 936,075.24 = 423,811.56 : x
  2. Step 2: Convert to fraction form
    678,312.80/936,075.24 = 423,811.56/x
  3. Step 3: Cross multiply
    678,312.80x = 936,075.24 × 423,811.56
  4. Step 4: Simplify right side
    678,312.80x = 396,719,507,741.77
  5. Step 5: Solve for x
    x = 396,719,507,741.77/678,312.80
  6. Step 6: Final answer
    x = 584,862.19

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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.