Home / 520,035.30-778,886.55-426,723.30

Finding the Fourth Proportional to 520,035.30, 778,886.55 and 426,723.30

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Solution

The fourth proportional to 520,035.30, 778,886.55 and 426,723.30 is: 639,127.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,035.30 : 778,886.55 = 426,723.30 : x
  2. Step 2: Convert to fraction form
    520,035.30/778,886.55 = 426,723.30/x
  3. Step 3: Cross multiply
    520,035.30x = 778,886.55 × 426,723.30
  4. Step 4: Simplify right side
    520,035.30x = 332,369,038,941.62
  5. Step 5: Solve for x
    x = 332,369,038,941.62/520,035.30
  6. Step 6: Final answer
    x = 639,127.84

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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.