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Finding the Fourth Proportional to 623,699.40, 933,955.02 and 342,908.04

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Solution

The fourth proportional to 623,699.40, 933,955.02 and 342,908.04 is: 513,485.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,699.40 : 933,955.02 = 342,908.04 : x
  2. Step 2: Convert to fraction form
    623,699.40/933,955.02 = 342,908.04/x
  3. Step 3: Cross multiply
    623,699.40x = 933,955.02 × 342,908.04
  4. Step 4: Simplify right side
    623,699.40x = 320,260,685,356.36
  5. Step 5: Solve for x
    x = 320,260,685,356.36/623,699.40
  6. Step 6: Final answer
    x = 513,485.64

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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.