Home / 693,845.64-957,454.14-421,875.78

Finding the Fourth Proportional to 693,845.64, 957,454.14 and 421,875.78

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Solution

The fourth proportional to 693,845.64, 957,454.14 and 421,875.78 is: 582,156.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,845.64 : 957,454.14 = 421,875.78 : x
  2. Step 2: Convert to fraction form
    693,845.64/957,454.14 = 421,875.78/x
  3. Step 3: Cross multiply
    693,845.64x = 957,454.14 × 421,875.78
  4. Step 4: Simplify right side
    693,845.64x = 403,926,712,126.73
  5. Step 5: Solve for x
    x = 403,926,712,126.73/693,845.64
  6. Step 6: Final answer
    x = 582,156.45

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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.