Home / 778,980.96-1,075,043.88-439,441.92

Finding the Fourth Proportional to 778,980.96, 1,075,043.88 and 439,441.92

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Solution

The fourth proportional to 778,980.96, 1,075,043.88 and 439,441.92 is: 606,458.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,980.96 : 1,075,043.88 = 439,441.92 : x
  2. Step 2: Convert to fraction form
    778,980.96/1,075,043.88 = 439,441.92/x
  3. Step 3: Cross multiply
    778,980.96x = 1,075,043.88 × 439,441.92
  4. Step 4: Simplify right side
    778,980.96x = 472,419,346,711.45
  5. Step 5: Solve for x
    x = 472,419,346,711.45/778,980.96
  6. Step 6: Final answer
    x = 606,458.14

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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.