Home / 631,039.14-870,392.12-427,000.23

Finding the Fourth Proportional to 631,039.14, 870,392.12 and 427,000.23

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Solution

The fourth proportional to 631,039.14, 870,392.12 and 427,000.23 is: 588,961.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,039.14 : 870,392.12 = 427,000.23 : x
  2. Step 2: Convert to fraction form
    631,039.14/870,392.12 = 427,000.23/x
  3. Step 3: Cross multiply
    631,039.14x = 870,392.12 × 427,000.23
  4. Step 4: Simplify right side
    631,039.14x = 371,657,633,295.19
  5. Step 5: Solve for x
    x = 371,657,633,295.19/631,039.14
  6. Step 6: Final answer
    x = 588,961.30

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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.