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Finding the Fourth Proportional to 374,622.80, 561,934.20 and 371,998.40

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Solution

The fourth proportional to 374,622.80, 561,934.20 and 371,998.40 is: 557,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,622.80 : 561,934.20 = 371,998.40 : x
  2. Step 2: Convert to fraction form
    374,622.80/561,934.20 = 371,998.40/x
  3. Step 3: Cross multiply
    374,622.80x = 561,934.20 × 371,998.40
  4. Step 4: Simplify right side
    374,622.80x = 209,038,623,305.28
  5. Step 5: Solve for x
    x = 209,038,623,305.28/374,622.80
  6. Step 6: Final answer
    x = 557,997.60

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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.