Home / 509,962.80-763,907.40-260,785.20

Finding the Fourth Proportional to 509,962.80, 763,907.40 and 260,785.20

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Solution

The fourth proportional to 509,962.80, 763,907.40 and 260,785.20 is: 390,647.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,962.80 : 763,907.40 = 260,785.20 : x
  2. Step 2: Convert to fraction form
    509,962.80/763,907.40 = 260,785.20/x
  3. Step 3: Cross multiply
    509,962.80x = 763,907.40 × 260,785.20
  4. Step 4: Simplify right side
    509,962.80x = 199,215,744,090.48
  5. Step 5: Solve for x
    x = 199,215,744,090.48/509,962.80
  6. Step 6: Final answer
    x = 390,647.60

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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.