Home / 922,721.60-1,384,276.80-389,968.40

Finding the Fourth Proportional to 922,721.60, 1,384,276.80 and 389,968.40

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Solution

The fourth proportional to 922,721.60, 1,384,276.80 and 389,968.40 is: 585,034.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,721.60 : 1,384,276.80 = 389,968.40 : x
  2. Step 2: Convert to fraction form
    922,721.60/1,384,276.80 = 389,968.40/x
  3. Step 3: Cross multiply
    922,721.60x = 1,384,276.80 × 389,968.40
  4. Step 4: Simplify right side
    922,721.60x = 539,824,208,853.12
  5. Step 5: Solve for x
    x = 539,824,208,853.12/922,721.60
  6. Step 6: Final answer
    x = 585,034.76

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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.