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Finding the Fourth Proportional to 917,347.85, 1,375,529.70 and 384,266.60

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Solution

The fourth proportional to 917,347.85, 1,375,529.70 and 384,266.60 is: 576,193.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,347.85 : 1,375,529.70 = 384,266.60 : x
  2. Step 2: Convert to fraction form
    917,347.85/1,375,529.70 = 384,266.60/x
  3. Step 3: Cross multiply
    917,347.85x = 1,375,529.70 × 384,266.60
  4. Step 4: Simplify right side
    917,347.85x = 528,570,121,018.02
  5. Step 5: Solve for x
    x = 528,570,121,018.02/917,347.85
  6. Step 6: Final answer
    x = 576,193.78

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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.