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Finding the Fourth Proportional to 599,779,999.80, 899,669,999.70 and 478,847,647.80

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Solution

The fourth proportional to 599,779,999.80, 899,669,999.70 and 478,847,647.80 is: 718,271,471.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    599,779,999.80 : 899,669,999.70 = 478,847,647.80 : x
  2. Step 2: Convert to fraction form
    599,779,999.80/899,669,999.70 = 478,847,647.80/x
  3. Step 3: Cross multiply
    599,779,999.80x = 899,669,999.70 × 478,847,647.80
  4. Step 4: Simplify right side
    599,779,999.80x = 430,804,863,152,571,712
  5. Step 5: Solve for x
    x = 430,804,863,152,571,712/599,779,999.80
  6. Step 6: Final answer
    x = 718,271,471.70

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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.