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Finding the Fourth Proportional to 872,501.64, 1,309,978.61 and 446,343.16

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Solution

The fourth proportional to 872,501.64, 1,309,978.61 and 446,343.16 is: 670,142.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,501.64 : 1,309,978.61 = 446,343.16 : x
  2. Step 2: Convert to fraction form
    872,501.64/1,309,978.61 = 446,343.16/x
  3. Step 3: Cross multiply
    872,501.64x = 1,309,978.61 × 446,343.16
  4. Step 4: Simplify right side
    872,501.64x = 584,699,999,749.58
  5. Step 5: Solve for x
    x = 584,699,999,749.58/872,501.64
  6. Step 6: Final answer
    x = 670,142.00

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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.