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Finding the Fourth Proportional to 670,534.55, 925,111.23 and 380,114.98

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Solution

The fourth proportional to 670,534.55, 925,111.23 and 380,114.98 is: 524,430.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,534.55 : 925,111.23 = 380,114.98 : x
  2. Step 2: Convert to fraction form
    670,534.55/925,111.23 = 380,114.98/x
  3. Step 3: Cross multiply
    670,534.55x = 925,111.23 × 380,114.98
  4. Step 4: Simplify right side
    670,534.55x = 351,648,632,951.02
  5. Step 5: Solve for x
    x = 351,648,632,951.02/670,534.55
  6. Step 6: Final answer
    x = 524,430.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.