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Finding the Fourth Proportional to 631,069.47, 870,875.82 and 344,589.80

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Solution

The fourth proportional to 631,069.47, 870,875.82 and 344,589.80 is: 475,533.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,069.47 : 870,875.82 = 344,589.80 : x
  2. Step 2: Convert to fraction form
    631,069.47/870,875.82 = 344,589.80/x
  3. Step 3: Cross multiply
    631,069.47x = 870,875.82 × 344,589.80
  4. Step 4: Simplify right side
    631,069.47x = 300,094,920,284.26
  5. Step 5: Solve for x
    x = 300,094,920,284.26/631,069.47
  6. Step 6: Final answer
    x = 475,533.89

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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.