Home / 430,821,689,781.60-646,232,534,672.40-261,114,296,911.20

Finding the Fourth Proportional to 430,821,689,781.60, 646,232,534,672.40 and 261,114,296,911.20

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Solution

The fourth proportional to 430,821,689,781.60, 646,232,534,672.40 and 261,114,296,911.20 is: 391,671,445,366.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,821,689,781.60 : 646,232,534,672.40 = 261,114,296,911.20 : x
  2. Step 2: Convert to fraction form
    430,821,689,781.60/646,232,534,672.40 = 261,114,296,911.20/x
  3. Step 3: Cross multiply
    430,821,689,781.60x = 646,232,534,672.40 × 261,114,296,911.20
  4. Step 4: Simplify right side
    430,821,689,781.60x = 168,740,553,932,126,403,166,208
  5. Step 5: Solve for x
    x = 168,740,553,932,126,403,166,208/430,821,689,781.60
  6. Step 6: Final answer
    x = 391,671,445,366.80

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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.