Home / 711,389.08-981,748.40-409,680.28

Finding the Fourth Proportional to 711,389.08, 981,748.40 and 409,680.28

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Solution

The fourth proportional to 711,389.08, 981,748.40 and 409,680.28 is: 565,376.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,389.08 : 981,748.40 = 409,680.28 : x
  2. Step 2: Convert to fraction form
    711,389.08/981,748.40 = 409,680.28/x
  3. Step 3: Cross multiply
    711,389.08x = 981,748.40 × 409,680.28
  4. Step 4: Simplify right side
    711,389.08x = 402,202,959,401.55
  5. Step 5: Solve for x
    x = 402,202,959,401.55/711,389.08
  6. Step 6: Final answer
    x = 565,376.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.