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Finding the Fourth Proportional to 452,017.92, 678,140.80 and 319,157.68

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Solution

The fourth proportional to 452,017.92, 678,140.80 and 319,157.68 is: 478,816.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,017.92 : 678,140.80 = 319,157.68 : x
  2. Step 2: Convert to fraction form
    452,017.92/678,140.80 = 319,157.68/x
  3. Step 3: Cross multiply
    452,017.92x = 678,140.80 × 319,157.68
  4. Step 4: Simplify right side
    452,017.92x = 216,433,844,441.34
  5. Step 5: Solve for x
    x = 216,433,844,441.34/452,017.92
  6. Step 6: Final answer
    x = 478,816.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.