Home / 680,037.60-1,020,056.40-647,378.40

Finding the Fourth Proportional to 680,037.60, 1,020,056.40 and 647,378.40

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Solution

The fourth proportional to 680,037.60, 1,020,056.40 and 647,378.40 is: 971,067.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,037.60 : 1,020,056.40 = 647,378.40 : x
  2. Step 2: Convert to fraction form
    680,037.60/1,020,056.40 = 647,378.40/x
  3. Step 3: Cross multiply
    680,037.60x = 1,020,056.40 × 647,378.40
  4. Step 4: Simplify right side
    680,037.60x = 660,362,480,141.76
  5. Step 5: Solve for x
    x = 660,362,480,141.76/680,037.60
  6. Step 6: Final answer
    x = 971,067.60

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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.