Home / 805,075.20-1,208,390.40-490,147.20

Finding the Fourth Proportional to 805,075.20, 1,208,390.40 and 490,147.20

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Solution

The fourth proportional to 805,075.20, 1,208,390.40 and 490,147.20 is: 735,694.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,075.20 : 1,208,390.40 = 490,147.20 : x
  2. Step 2: Convert to fraction form
    805,075.20/1,208,390.40 = 490,147.20/x
  3. Step 3: Cross multiply
    805,075.20x = 1,208,390.40 × 490,147.20
  4. Step 4: Simplify right side
    805,075.20x = 592,289,171,066.88
  5. Step 5: Solve for x
    x = 592,289,171,066.88/805,075.20
  6. Step 6: Final answer
    x = 735,694.22

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1.5x scale

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.