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Finding the Fourth Proportional to 647,620.60, 893,717.34 and 357,225.68

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Solution

The fourth proportional to 647,620.60, 893,717.34 and 357,225.68 is: 492,971.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,620.60 : 893,717.34 = 357,225.68 : x
  2. Step 2: Convert to fraction form
    647,620.60/893,717.34 = 357,225.68/x
  3. Step 3: Cross multiply
    647,620.60x = 893,717.34 × 357,225.68
  4. Step 4: Simplify right side
    647,620.60x = 319,258,784,509.29
  5. Step 5: Solve for x
    x = 319,258,784,509.29/647,620.60
  6. Step 6: Final answer
    x = 492,971.94

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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.