Home / 578,995,438.40-868,194,559.20-215,302,587.20

Finding the Fourth Proportional to 578,995,438.40, 868,194,559.20 and 215,302,587.20

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Solution

The fourth proportional to 578,995,438.40, 868,194,559.20 and 215,302,587.20 is: 322,842,845.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,995,438.40 : 868,194,559.20 = 215,302,587.20 : x
  2. Step 2: Convert to fraction form
    578,995,438.40/868,194,559.20 = 215,302,587.20/x
  3. Step 3: Cross multiply
    578,995,438.40x = 868,194,559.20 × 215,302,587.20
  4. Step 4: Simplify right side
    578,995,438.40x = 186,924,534,788,723,552
  5. Step 5: Solve for x
    x = 186,924,534,788,723,552/578,995,438.40
  6. Step 6: Final answer
    x = 322,842,845.37

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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.