Home / 680,981.40-1,019,916.90-401,045.40

Finding the Fourth Proportional to 680,981.40, 1,019,916.90 and 401,045.40

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Solution

The fourth proportional to 680,981.40, 1,019,916.90 and 401,045.40 is: 600,652.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,981.40 : 1,019,916.90 = 401,045.40 : x
  2. Step 2: Convert to fraction form
    680,981.40/1,019,916.90 = 401,045.40/x
  3. Step 3: Cross multiply
    680,981.40x = 1,019,916.90 × 401,045.40
  4. Step 4: Simplify right side
    680,981.40x = 409,032,981,127.26
  5. Step 5: Solve for x
    x = 409,032,981,127.26/680,981.40
  6. Step 6: Final answer
    x = 600,652.21

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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.