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Finding the Fourth Proportional to 411,970.40, 617,955.60 and 402,754.40

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Solution

The fourth proportional to 411,970.40, 617,955.60 and 402,754.40 is: 604,131.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,970.40 : 617,955.60 = 402,754.40 : x
  2. Step 2: Convert to fraction form
    411,970.40/617,955.60 = 402,754.40/x
  3. Step 3: Cross multiply
    411,970.40x = 617,955.60 × 402,754.40
  4. Step 4: Simplify right side
    411,970.40x = 248,884,336,904.64
  5. Step 5: Solve for x
    x = 248,884,336,904.64/411,970.40
  6. Step 6: Final answer
    x = 604,131.60

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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.