Home / 470,309,940-649,030,240.85-258,630,420.56

Finding the Fourth Proportional to 470,309,940, 649,030,240.85 and 258,630,420.56

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Solution

The fourth proportional to 470,309,940, 649,030,240.85 and 258,630,420.56 is: 356,911,368.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,309,940 : 649,030,240.85 = 258,630,420.56 : x
  2. Step 2: Convert to fraction form
    470,309,940/649,030,240.85 = 258,630,420.56/x
  3. Step 3: Cross multiply
    470,309,940x = 649,030,240.85 × 258,630,420.56
  4. Step 4: Simplify right side
    470,309,940x = 167,858,964,142,655,296
  5. Step 5: Solve for x
    x = 167,858,964,142,655,296/470,309,940
  6. Step 6: Final answer
    x = 356,911,368.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.