Home / 911,953.95-1,258,501.38-498,491.28

Finding the Fourth Proportional to 911,953.95, 1,258,501.38 and 498,491.28

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Solution

The fourth proportional to 911,953.95, 1,258,501.38 and 498,491.28 is: 687,920.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,953.95 : 1,258,501.38 = 498,491.28 : x
  2. Step 2: Convert to fraction form
    911,953.95/1,258,501.38 = 498,491.28/x
  3. Step 3: Cross multiply
    911,953.95x = 1,258,501.38 × 498,491.28
  4. Step 4: Simplify right side
    911,953.95x = 627,351,963,797.97
  5. Step 5: Solve for x
    x = 627,351,963,797.97/911,953.95
  6. Step 6: Final answer
    x = 687,920.66

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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.