Home / 645,828.84-891,367.16-427,652.71

Finding the Fourth Proportional to 645,828.84, 891,367.16 and 427,652.71

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Solution

The fourth proportional to 645,828.84, 891,367.16 and 427,652.71 is: 590,242.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,828.84 : 891,367.16 = 427,652.71 : x
  2. Step 2: Convert to fraction form
    645,828.84/891,367.16 = 427,652.71/x
  3. Step 3: Cross multiply
    645,828.84x = 891,367.16 × 427,652.71
  4. Step 4: Simplify right side
    645,828.84x = 381,195,577,212.32
  5. Step 5: Solve for x
    x = 381,195,577,212.32/645,828.84
  6. Step 6: Final answer
    x = 590,242.42

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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.