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Finding the Fourth Proportional to 978,804,905.60, 1,468,207,358.40 and 591,821,379.20

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Solution

The fourth proportional to 978,804,905.60, 1,468,207,358.40 and 591,821,379.20 is: 887,732,068.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,804,905.60 : 1,468,207,358.40 = 591,821,379.20 : x
  2. Step 2: Convert to fraction form
    978,804,905.60/1,468,207,358.40 = 591,821,379.20/x
  3. Step 3: Cross multiply
    978,804,905.60x = 1,468,207,358.40 × 591,821,379.20
  4. Step 4: Simplify right side
    978,804,905.60x = 868,916,503,799,876,864
  5. Step 5: Solve for x
    x = 868,916,503,799,876,864/978,804,905.60
  6. Step 6: Final answer
    x = 887,732,068.80

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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.