Home / 784,890.10-1,177,335.15-405,810.10

Finding the Fourth Proportional to 784,890.10, 1,177,335.15 and 405,810.10

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Solution

The fourth proportional to 784,890.10, 1,177,335.15 and 405,810.10 is: 608,715.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,890.10 : 1,177,335.15 = 405,810.10 : x
  2. Step 2: Convert to fraction form
    784,890.10/1,177,335.15 = 405,810.10/x
  3. Step 3: Cross multiply
    784,890.10x = 1,177,335.15 × 405,810.10
  4. Step 4: Simplify right side
    784,890.10x = 477,774,494,955.02
  5. Step 5: Solve for x
    x = 477,774,494,955.02/784,890.10
  6. Step 6: Final answer
    x = 608,715.15

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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.