Home / 1,020,455.38-1,529,347.11-420,718.42

Finding the Fourth Proportional to 1,020,455.38, 1,529,347.11 and 420,718.42

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Solution

The fourth proportional to 1,020,455.38, 1,529,347.11 and 420,718.42 is: 630,526.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,455.38 : 1,529,347.11 = 420,718.42 : x
  2. Step 2: Convert to fraction form
    1,020,455.38/1,529,347.11 = 420,718.42/x
  3. Step 3: Cross multiply
    1,020,455.38x = 1,529,347.11 × 420,718.42
  4. Step 4: Simplify right side
    1,020,455.38x = 643,424,499,750.77
  5. Step 5: Solve for x
    x = 643,424,499,750.77/1,020,455.38
  6. Step 6: Final answer
    x = 630,526.83

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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.