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Finding the Fourth Proportional to 612,656.54, 918,303.79 and 462,409.64

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Solution

The fourth proportional to 612,656.54, 918,303.79 and 462,409.64 is: 693,100.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,656.54 : 918,303.79 = 462,409.64 : x
  2. Step 2: Convert to fraction form
    612,656.54/918,303.79 = 462,409.64/x
  3. Step 3: Cross multiply
    612,656.54x = 918,303.79 × 462,409.64
  4. Step 4: Simplify right side
    612,656.54x = 424,632,520,353.02
  5. Step 5: Solve for x
    x = 424,632,520,353.02/612,656.54
  6. Step 6: Final answer
    x = 693,100.45

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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.