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Finding the Fourth Proportional to 580,895.40, 870,720.14 and 280,963.38

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Solution

The fourth proportional to 580,895.40, 870,720.14 and 280,963.38 is: 421,143.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,895.40 : 870,720.14 = 280,963.38 : x
  2. Step 2: Convert to fraction form
    580,895.40/870,720.14 = 280,963.38/x
  3. Step 3: Cross multiply
    580,895.40x = 870,720.14 × 280,963.38
  4. Step 4: Simplify right side
    580,895.40x = 244,640,477,931.19
  5. Step 5: Solve for x
    x = 244,640,477,931.19/580,895.40
  6. Step 6: Final answer
    x = 421,143.77

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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.