Home / 687,017.84-948,099.80-381,084.23

Finding the Fourth Proportional to 687,017.84, 948,099.80 and 381,084.23

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Solution

The fourth proportional to 687,017.84, 948,099.80 and 381,084.23 is: 525,904.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,017.84 : 948,099.80 = 381,084.23 : x
  2. Step 2: Convert to fraction form
    687,017.84/948,099.80 = 381,084.23/x
  3. Step 3: Cross multiply
    687,017.84x = 948,099.80 × 381,084.23
  4. Step 4: Simplify right side
    687,017.84x = 361,305,885,569.11
  5. Step 5: Solve for x
    x = 361,305,885,569.11/687,017.84
  6. Step 6: Final answer
    x = 525,904.67

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Double scale
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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.