Home / 920,717.28-1,270,935.36-680,929.74

Finding the Fourth Proportional to 920,717.28, 1,270,935.36 and 680,929.74

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Solution

The fourth proportional to 920,717.28, 1,270,935.36 and 680,929.74 is: 939,938.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,717.28 : 1,270,935.36 = 680,929.74 : x
  2. Step 2: Convert to fraction form
    920,717.28/1,270,935.36 = 680,929.74/x
  3. Step 3: Cross multiply
    920,717.28x = 1,270,935.36 × 680,929.74
  4. Step 4: Simplify right side
    920,717.28x = 865,417,684,241.61
  5. Step 5: Solve for x
    x = 865,417,684,241.61/920,717.28
  6. Step 6: Final answer
    x = 939,938.57

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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.