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Finding the Fourth Proportional to 553,715.20, 830,054.40 and 433,705.60

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Solution

The fourth proportional to 553,715.20, 830,054.40 and 433,705.60 is: 650,152.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,715.20 : 830,054.40 = 433,705.60 : x
  2. Step 2: Convert to fraction form
    553,715.20/830,054.40 = 433,705.60/x
  3. Step 3: Cross multiply
    553,715.20x = 830,054.40 × 433,705.60
  4. Step 4: Simplify right side
    553,715.20x = 359,999,241,584.64
  5. Step 5: Solve for x
    x = 359,999,241,584.64/553,715.20
  6. Step 6: Final answer
    x = 650,152.36

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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.