Home / 911,953.98-1,258,501.41-498,491.28

Finding the Fourth Proportional to 911,953.98, 1,258,501.41 and 498,491.28

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Solution

The fourth proportional to 911,953.98, 1,258,501.41 and 498,491.28 is: 687,920.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,953.98 : 1,258,501.41 = 498,491.28 : x
  2. Step 2: Convert to fraction form
    911,953.98/1,258,501.41 = 498,491.28/x
  3. Step 3: Cross multiply
    911,953.98x = 1,258,501.41 × 498,491.28
  4. Step 4: Simplify right side
    911,953.98x = 627,351,978,752.71
  5. Step 5: Solve for x
    x = 627,351,978,752.71/911,953.98
  6. Step 6: Final answer
    x = 687,920.65

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1.5x scale

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.