Home / 694,420.47-958,327.50-407,938.05

Finding the Fourth Proportional to 694,420.47, 958,327.50 and 407,938.05

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Solution

The fourth proportional to 694,420.47, 958,327.50 and 407,938.05 is: 562,970.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,420.47 : 958,327.50 = 407,938.05 : x
  2. Step 2: Convert to fraction form
    694,420.47/958,327.50 = 407,938.05/x
  3. Step 3: Cross multiply
    694,420.47x = 958,327.50 × 407,938.05
  4. Step 4: Simplify right side
    694,420.47x = 390,938,251,611.38
  5. Step 5: Solve for x
    x = 390,938,251,611.38/694,420.47
  6. Step 6: Final answer
    x = 562,970.52

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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.