Home / 866,171,918.40-1,299,257,877.60-521,798,150.40

Finding the Fourth Proportional to 866,171,918.40, 1,299,257,877.60 and 521,798,150.40

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Solution

The fourth proportional to 866,171,918.40, 1,299,257,877.60 and 521,798,150.40 is: 782,697,225.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,171,918.40 : 1,299,257,877.60 = 521,798,150.40 : x
  2. Step 2: Convert to fraction form
    866,171,918.40/1,299,257,877.60 = 521,798,150.40/x
  3. Step 3: Cross multiply
    866,171,918.40x = 1,299,257,877.60 × 521,798,150.40
  4. Step 4: Simplify right side
    866,171,918.40x = 677,950,357,424,309,504
  5. Step 5: Solve for x
    x = 677,950,357,424,309,504/866,171,918.40
  6. Step 6: Final answer
    x = 782,697,225.60

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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.