Home / 728,075.04-1,091,364.24-278,690.40

Finding the Fourth Proportional to 728,075.04, 1,091,364.24 and 278,690.40

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Solution

The fourth proportional to 728,075.04, 1,091,364.24 and 278,690.40 is: 417,749.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,075.04 : 1,091,364.24 = 278,690.40 : x
  2. Step 2: Convert to fraction form
    728,075.04/1,091,364.24 = 278,690.40/x
  3. Step 3: Cross multiply
    728,075.04x = 1,091,364.24 × 278,690.40
  4. Step 4: Simplify right side
    728,075.04x = 304,152,736,591.30
  5. Step 5: Solve for x
    x = 304,152,736,591.30/728,075.04
  6. Step 6: Final answer
    x = 417,749.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.