Home / 839,921.40-1,159,085.70-477,316.80

Finding the Fourth Proportional to 839,921.40, 1,159,085.70 and 477,316.80

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Solution

The fourth proportional to 839,921.40, 1,159,085.70 and 477,316.80 is: 658,693.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,921.40 : 1,159,085.70 = 477,316.80 : x
  2. Step 2: Convert to fraction form
    839,921.40/1,159,085.70 = 477,316.80/x
  3. Step 3: Cross multiply
    839,921.40x = 1,159,085.70 × 477,316.80
  4. Step 4: Simplify right side
    839,921.40x = 553,251,077,249.76
  5. Step 5: Solve for x
    x = 553,251,077,249.76/839,921.40
  6. Step 6: Final answer
    x = 658,693.87

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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.