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Finding the Fourth Proportional to 875,852.70, 1,312,871.85 and 475,647.90

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Solution

The fourth proportional to 875,852.70, 1,312,871.85 and 475,647.90 is: 712,979.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,852.70 : 1,312,871.85 = 475,647.90 : x
  2. Step 2: Convert to fraction form
    875,852.70/1,312,871.85 = 475,647.90/x
  3. Step 3: Cross multiply
    875,852.70x = 1,312,871.85 × 475,647.90
  4. Step 4: Simplify right side
    875,852.70x = 624,464,738,421.62
  5. Step 5: Solve for x
    x = 624,464,738,421.62/875,852.70
  6. Step 6: Final answer
    x = 712,979.18

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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.