Home / 866,052,021.60-1,299,078,032.40-478,631,532.60

Finding the Fourth Proportional to 866,052,021.60, 1,299,078,032.40 and 478,631,532.60

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Solution

The fourth proportional to 866,052,021.60, 1,299,078,032.40 and 478,631,532.60 is: 717,947,298.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,052,021.60 : 1,299,078,032.40 = 478,631,532.60 : x
  2. Step 2: Convert to fraction form
    866,052,021.60/1,299,078,032.40 = 478,631,532.60/x
  3. Step 3: Cross multiply
    866,052,021.60x = 1,299,078,032.40 × 478,631,532.60
  4. Step 4: Simplify right side
    866,052,021.60x = 621,779,709,614,604,544
  5. Step 5: Solve for x
    x = 621,779,709,614,604,544/866,052,021.60
  6. Step 6: Final answer
    x = 717,947,298.90

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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.