Home / 1,018,921.20-1,528,381.80-664,335.60

Finding the Fourth Proportional to 1,018,921.20, 1,528,381.80 and 664,335.60

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Solution

The fourth proportional to 1,018,921.20, 1,528,381.80 and 664,335.60 is: 996,503.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018,921.20 : 1,528,381.80 = 664,335.60 : x
  2. Step 2: Convert to fraction form
    1,018,921.20/1,528,381.80 = 664,335.60/x
  3. Step 3: Cross multiply
    1,018,921.20x = 1,528,381.80 × 664,335.60
  4. Step 4: Simplify right side
    1,018,921.20x = 1,015,358,440,132.08
  5. Step 5: Solve for x
    x = 1,015,358,440,132.08/1,018,921.20
  6. Step 6: Final answer
    x = 996,503.40

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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.