Home / 863,136,409.80-1,294,704,614.70-518,479,206.60

Finding the Fourth Proportional to 863,136,409.80, 1,294,704,614.70 and 518,479,206.60

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Solution

The fourth proportional to 863,136,409.80, 1,294,704,614.70 and 518,479,206.60 is: 777,718,809.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,136,409.80 : 1,294,704,614.70 = 518,479,206.60 : x
  2. Step 2: Convert to fraction form
    863,136,409.80/1,294,704,614.70 = 518,479,206.60/x
  3. Step 3: Cross multiply
    863,136,409.80x = 1,294,704,614.70 × 518,479,206.60
  4. Step 4: Simplify right side
    863,136,409.80x = 671,277,421,411,014,784
  5. Step 5: Solve for x
    x = 671,277,421,411,014,784/863,136,409.80
  6. Step 6: Final answer
    x = 777,718,809.90

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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.