Home / 780,059.80-1,170,089.70-442,970.20

Finding the Fourth Proportional to 780,059.80, 1,170,089.70 and 442,970.20

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Solution

The fourth proportional to 780,059.80, 1,170,089.70 and 442,970.20 is: 664,455.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,059.80 : 1,170,089.70 = 442,970.20 : x
  2. Step 2: Convert to fraction form
    780,059.80/1,170,089.70 = 442,970.20/x
  3. Step 3: Cross multiply
    780,059.80x = 1,170,089.70 × 442,970.20
  4. Step 4: Simplify right side
    780,059.80x = 518,314,868,426.94
  5. Step 5: Solve for x
    x = 518,314,868,426.94/780,059.80
  6. Step 6: Final answer
    x = 664,455.30

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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.