Home / 663,895.40-993,218.70-576,123.80

Finding the Fourth Proportional to 663,895.40, 993,218.70 and 576,123.80

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Solution

The fourth proportional to 663,895.40, 993,218.70 and 576,123.80 is: 861,908.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,895.40 : 993,218.70 = 576,123.80 : x
  2. Step 2: Convert to fraction form
    663,895.40/993,218.70 = 576,123.80/x
  3. Step 3: Cross multiply
    663,895.40x = 993,218.70 × 576,123.80
  4. Step 4: Simplify right side
    663,895.40x = 572,216,931,675.06
  5. Step 5: Solve for x
    x = 572,216,931,675.06/663,895.40
  6. Step 6: Final answer
    x = 861,908.26

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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.