Home / 520,076.10-778,558.95-489,317.70

Finding the Fourth Proportional to 520,076.10, 778,558.95 and 489,317.70

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Solution

The fourth proportional to 520,076.10, 778,558.95 and 489,317.70 is: 732,513.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,076.10 : 778,558.95 = 489,317.70 : x
  2. Step 2: Convert to fraction form
    520,076.10/778,558.95 = 489,317.70/x
  3. Step 3: Cross multiply
    520,076.10x = 778,558.95 × 489,317.70
  4. Step 4: Simplify right side
    520,076.10x = 380,962,674,728.42
  5. Step 5: Solve for x
    x = 380,962,674,728.42/520,076.10
  6. Step 6: Final answer
    x = 732,513.33

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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.