Home / 721,877.70-1,082,816.55-553,916.10

Finding the Fourth Proportional to 721,877.70, 1,082,816.55 and 553,916.10

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Solution

The fourth proportional to 721,877.70, 1,082,816.55 and 553,916.10 is: 830,874.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,877.70 : 1,082,816.55 = 553,916.10 : x
  2. Step 2: Convert to fraction form
    721,877.70/1,082,816.55 = 553,916.10/x
  3. Step 3: Cross multiply
    721,877.70x = 1,082,816.55 × 553,916.10
  4. Step 4: Simplify right side
    721,877.70x = 599,789,520,391.46
  5. Step 5: Solve for x
    x = 599,789,520,391.46/721,877.70
  6. Step 6: Final answer
    x = 830,874.15

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1.5x scale

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.