Home / 842,920.40-1,264,380.60-559,485.20

Finding the Fourth Proportional to 842,920.40, 1,264,380.60 and 559,485.20

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Solution

The fourth proportional to 842,920.40, 1,264,380.60 and 559,485.20 is: 839,227.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,920.40 : 1,264,380.60 = 559,485.20 : x
  2. Step 2: Convert to fraction form
    842,920.40/1,264,380.60 = 559,485.20/x
  3. Step 3: Cross multiply
    842,920.40x = 1,264,380.60 × 559,485.20
  4. Step 4: Simplify right side
    842,920.40x = 707,402,232,867.12
  5. Step 5: Solve for x
    x = 707,402,232,867.12/842,920.40
  6. Step 6: Final answer
    x = 839,227.80

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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.