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Finding the Fourth Proportional to 553,380.40, 830,070.60 and 402,914.80

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Solution

The fourth proportional to 553,380.40, 830,070.60 and 402,914.80 is: 604,372.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,380.40 : 830,070.60 = 402,914.80 : x
  2. Step 2: Convert to fraction form
    553,380.40/830,070.60 = 402,914.80/x
  3. Step 3: Cross multiply
    553,380.40x = 830,070.60 × 402,914.80
  4. Step 4: Simplify right side
    553,380.40x = 334,447,729,784.88
  5. Step 5: Solve for x
    x = 334,447,729,784.88/553,380.40
  6. Step 6: Final answer
    x = 604,372.20

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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.