Home / 813,709.32-1,122,916.93-451,123.89

Finding the Fourth Proportional to 813,709.32, 1,122,916.93 and 451,123.89

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Solution

The fourth proportional to 813,709.32, 1,122,916.93 and 451,123.89 is: 622,549.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,709.32 : 1,122,916.93 = 451,123.89 : x
  2. Step 2: Convert to fraction form
    813,709.32/1,122,916.93 = 451,123.89/x
  3. Step 3: Cross multiply
    813,709.32x = 1,122,916.93 × 451,123.89
  4. Step 4: Simplify right side
    813,709.32x = 506,574,653,608.46
  5. Step 5: Solve for x
    x = 506,574,653,608.46/813,709.32
  6. Step 6: Final answer
    x = 622,549.90

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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.