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Finding the Fourth Proportional to 612,914.75, 918,762.11 and 292,692.29

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Solution

The fourth proportional to 612,914.75, 918,762.11 and 292,692.29 is: 438,747.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,914.75 : 918,762.11 = 292,692.29 : x
  2. Step 2: Convert to fraction form
    612,914.75/918,762.11 = 292,692.29/x
  3. Step 3: Cross multiply
    612,914.75x = 918,762.11 × 292,692.29
  4. Step 4: Simplify right side
    612,914.75x = 268,914,580,981.46
  5. Step 5: Solve for x
    x = 268,914,580,981.46/612,914.75
  6. Step 6: Final answer
    x = 438,747.12

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1.5x scale

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.