Home / 780,037.80-1,170,056.70-442,948.20

Finding the Fourth Proportional to 780,037.80, 1,170,056.70 and 442,948.20

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Solution

The fourth proportional to 780,037.80, 1,170,056.70 and 442,948.20 is: 664,422.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,037.80 : 1,170,056.70 = 442,948.20 : x
  2. Step 2: Convert to fraction form
    780,037.80/1,170,056.70 = 442,948.20/x
  3. Step 3: Cross multiply
    780,037.80x = 1,170,056.70 × 442,948.20
  4. Step 4: Simplify right side
    780,037.80x = 518,274,509,162.94
  5. Step 5: Solve for x
    x = 518,274,509,162.94/780,037.80
  6. Step 6: Final answer
    x = 664,422.30

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Double scale
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Similar ratio
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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.