Home / 922,719.60-1,384,273.80-389,966.40

Finding the Fourth Proportional to 922,719.60, 1,384,273.80 and 389,966.40

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Solution

The fourth proportional to 922,719.60, 1,384,273.80 and 389,966.40 is: 585,031.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,719.60 : 1,384,273.80 = 389,966.40 : x
  2. Step 2: Convert to fraction form
    922,719.60/1,384,273.80 = 389,966.40/x
  3. Step 3: Cross multiply
    922,719.60x = 1,384,273.80 × 389,966.40
  4. Step 4: Simplify right side
    922,719.60x = 539,820,270,400.32
  5. Step 5: Solve for x
    x = 539,820,270,400.32/922,719.60
  6. Step 6: Final answer
    x = 585,031.76

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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.