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Finding the Fourth Proportional to 386,169,615.60, 579,254,423.40 and 386,169,615.60

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Solution

The fourth proportional to 386,169,615.60, 579,254,423.40 and 386,169,615.60 is: 579,254,423.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,169,615.60 : 579,254,423.40 = 386,169,615.60 : x
  2. Step 2: Convert to fraction form
    386,169,615.60/579,254,423.40 = 386,169,615.60/x
  3. Step 3: Cross multiply
    386,169,615.60x = 579,254,423.40 × 386,169,615.60
  4. Step 4: Simplify right side
    386,169,615.60x = 223,690,458,018,977,664
  5. Step 5: Solve for x
    x = 223,690,458,018,977,664/386,169,615.60
  6. Step 6: Final answer
    x = 579,254,423.40

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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.