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Finding the Fourth Proportional to 659,437,329.60, 989,299,461.60 and 199,363,485.60

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Solution

The fourth proportional to 659,437,329.60, 989,299,461.60 and 199,363,485.60 is: 299,088,601.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,437,329.60 : 989,299,461.60 = 199,363,485.60 : x
  2. Step 2: Convert to fraction form
    659,437,329.60/989,299,461.60 = 199,363,485.60/x
  3. Step 3: Cross multiply
    659,437,329.60x = 989,299,461.60 × 199,363,485.60
  4. Step 4: Simplify right side
    659,437,329.60x = 197,230,188,966,779,360
  5. Step 5: Solve for x
    x = 197,230,188,966,779,360/659,437,329.60
  6. Step 6: Final answer
    x = 299,088,601.92

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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.