Home / 710,811.38-981,095.97-405,069.15

Finding the Fourth Proportional to 710,811.38, 981,095.97 and 405,069.15

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Solution

The fourth proportional to 710,811.38, 981,095.97 and 405,069.15 is: 559,095.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,811.38 : 981,095.97 = 405,069.15 : x
  2. Step 2: Convert to fraction form
    710,811.38/981,095.97 = 405,069.15/x
  3. Step 3: Cross multiply
    710,811.38x = 981,095.97 × 405,069.15
  4. Step 4: Simplify right side
    710,811.38x = 397,411,714,101.74
  5. Step 5: Solve for x
    x = 397,411,714,101.74/710,811.38
  6. Step 6: Final answer
    x = 559,095.88

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1.5x scale

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.