Home / 1,689,672-2,331,173.28-963,998.40

Finding the Fourth Proportional to 1,689,672, 2,331,173.28 and 963,998.40

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Solution

The fourth proportional to 1,689,672, 2,331,173.28 and 963,998.40 is: 1,329,990.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689,672 : 2,331,173.28 = 963,998.40 : x
  2. Step 2: Convert to fraction form
    1,689,672/2,331,173.28 = 963,998.40/x
  3. Step 3: Cross multiply
    1,689,672x = 2,331,173.28 × 963,998.40
  4. Step 4: Simplify right side
    1,689,672x = 2,247,247,312,042.75
  5. Step 5: Solve for x
    x = 2,247,247,312,042.75/1,689,672
  6. Step 6: Final answer
    x = 1,329,990.27

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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.