Home / 678,271.60-1,017,407.40-639,564.40

Finding the Fourth Proportional to 678,271.60, 1,017,407.40 and 639,564.40

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Solution

The fourth proportional to 678,271.60, 1,017,407.40 and 639,564.40 is: 959,346.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,271.60 : 1,017,407.40 = 639,564.40 : x
  2. Step 2: Convert to fraction form
    678,271.60/1,017,407.40 = 639,564.40/x
  3. Step 3: Cross multiply
    678,271.60x = 1,017,407.40 × 639,564.40
  4. Step 4: Simplify right side
    678,271.60x = 650,697,553,336.56
  5. Step 5: Solve for x
    x = 650,697,553,336.56/678,271.60
  6. Step 6: Final answer
    x = 959,346.60

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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.