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Finding the Fourth Proportional to 656,153.80, 905,492.23 and 354,347.80

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Solution

The fourth proportional to 656,153.80, 905,492.23 and 354,347.80 is: 488,999.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,153.80 : 905,492.23 = 354,347.80 : x
  2. Step 2: Convert to fraction form
    656,153.80/905,492.23 = 354,347.80/x
  3. Step 3: Cross multiply
    656,153.80x = 905,492.23 × 354,347.80
  4. Step 4: Simplify right side
    656,153.80x = 320,859,178,461.20
  5. Step 5: Solve for x
    x = 320,859,178,461.20/656,153.80
  6. Step 6: Final answer
    x = 488,999.96

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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.