Home / 1,212,117-1,672,746.78-668,275.71

Finding the Fourth Proportional to 1,212,117, 1,672,746.78 and 668,275.71

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Solution

The fourth proportional to 1,212,117, 1,672,746.78 and 668,275.71 is: 922,234.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,117 : 1,672,746.78 = 668,275.71 : x
  2. Step 2: Convert to fraction form
    1,212,117/1,672,746.78 = 668,275.71/x
  3. Step 3: Cross multiply
    1,212,117x = 1,672,746.78 × 668,275.71
  4. Step 4: Simplify right side
    1,212,117x = 1,117,856,038,713.34
  5. Step 5: Solve for x
    x = 1,117,856,038,713.34/1,212,117
  6. Step 6: Final answer
    x = 922,234.44

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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.