Home / 971,410.81-1,456,234.11-339,980.17

Finding the Fourth Proportional to 971,410.81, 1,456,234.11 and 339,980.17

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Solution

The fourth proportional to 971,410.81, 1,456,234.11 and 339,980.17 is: 509,661.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,410.81 : 1,456,234.11 = 339,980.17 : x
  2. Step 2: Convert to fraction form
    971,410.81/1,456,234.11 = 339,980.17/x
  3. Step 3: Cross multiply
    971,410.81x = 1,456,234.11 × 339,980.17
  4. Step 4: Simplify right side
    971,410.81x = 495,090,720,277.60
  5. Step 5: Solve for x
    x = 495,090,720,277.60/971,410.81
  6. Step 6: Final answer
    x = 509,661.53

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Double scale
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Similar ratio
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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.