Home / 900,724.59-1,242,989.28-492,821.69

Finding the Fourth Proportional to 900,724.59, 1,242,989.28 and 492,821.69

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Solution

The fourth proportional to 900,724.59, 1,242,989.28 and 492,821.69 is: 680,088.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,724.59 : 1,242,989.28 = 492,821.69 : x
  2. Step 2: Convert to fraction form
    900,724.59/1,242,989.28 = 492,821.69/x
  3. Step 3: Cross multiply
    900,724.59x = 1,242,989.28 × 492,821.69
  4. Step 4: Simplify right side
    900,724.59x = 612,572,071,406.54
  5. Step 5: Solve for x
    x = 612,572,071,406.54/900,724.59
  6. Step 6: Final answer
    x = 680,088.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.