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Finding the Fourth Proportional to 470,779.80, 706,169.70 and 432,072.60

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Solution

The fourth proportional to 470,779.80, 706,169.70 and 432,072.60 is: 648,108.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,779.80 : 706,169.70 = 432,072.60 : x
  2. Step 2: Convert to fraction form
    470,779.80/706,169.70 = 432,072.60/x
  3. Step 3: Cross multiply
    470,779.80x = 706,169.70 × 432,072.60
  4. Step 4: Simplify right side
    470,779.80x = 305,116,578,320.22
  5. Step 5: Solve for x
    x = 305,116,578,320.22/470,779.80
  6. Step 6: Final answer
    x = 648,108.90

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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.