Home / 621,117.07-857,133.35-345,473.05

Finding the Fourth Proportional to 621,117.07, 857,133.35 and 345,473.05

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Solution

The fourth proportional to 621,117.07, 857,133.35 and 345,473.05 is: 476,748.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,117.07 : 857,133.35 = 345,473.05 : x
  2. Step 2: Convert to fraction form
    621,117.07/857,133.35 = 345,473.05/x
  3. Step 3: Cross multiply
    621,117.07x = 857,133.35 × 345,473.05
  4. Step 4: Simplify right side
    621,117.07x = 296,116,470,953.85
  5. Step 5: Solve for x
    x = 296,116,470,953.85/621,117.07
  6. Step 6: Final answer
    x = 476,748.24

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Double scale
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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.