Home / 614,307,879.20-921,461,818.80-205,310,885.60

Finding the Fourth Proportional to 614,307,879.20, 921,461,818.80 and 205,310,885.60

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Solution

The fourth proportional to 614,307,879.20, 921,461,818.80 and 205,310,885.60 is: 307,966,328.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,307,879.20 : 921,461,818.80 = 205,310,885.60 : x
  2. Step 2: Convert to fraction form
    614,307,879.20/921,461,818.80 = 205,310,885.60/x
  3. Step 3: Cross multiply
    614,307,879.20x = 921,461,818.80 × 205,310,885.60
  4. Step 4: Simplify right side
    614,307,879.20x = 189,186,142,064,414,720
  5. Step 5: Solve for x
    x = 189,186,142,064,414,720/614,307,879.20
  6. Step 6: Final answer
    x = 307,966,328.40

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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.