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Finding the Fourth Proportional to 442,602,419.40, 620,550,379.80 and 442,602,419.40

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Solution

The fourth proportional to 442,602,419.40, 620,550,379.80 and 442,602,419.40 is: 620,550,379.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,602,419.40 : 620,550,379.80 = 442,602,419.40 : x
  2. Step 2: Convert to fraction form
    442,602,419.40/620,550,379.80 = 442,602,419.40/x
  3. Step 3: Cross multiply
    442,602,419.40x = 620,550,379.80 × 442,602,419.40
  4. Step 4: Simplify right side
    442,602,419.40x = 274,657,099,459,068,864
  5. Step 5: Solve for x
    x = 274,657,099,459,068,864/442,602,419.40
  6. Step 6: Final answer
    x = 620,550,379.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.