Home / 409,001,111.20-613,501,666.80-317,630,000.80

Finding the Fourth Proportional to 409,001,111.20, 613,501,666.80 and 317,630,000.80

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Solution

The fourth proportional to 409,001,111.20, 613,501,666.80 and 317,630,000.80 is: 476,445,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,001,111.20 : 613,501,666.80 = 317,630,000.80 : x
  2. Step 2: Convert to fraction form
    409,001,111.20/613,501,666.80 = 317,630,000.80/x
  3. Step 3: Cross multiply
    409,001,111.20x = 613,501,666.80 × 317,630,000.80
  4. Step 4: Simplify right side
    409,001,111.20x = 194,866,534,916,485,312
  5. Step 5: Solve for x
    x = 194,866,534,916,485,312/409,001,111.20
  6. Step 6: Final answer
    x = 476,445,001.20

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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.