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Finding the Fourth Proportional to 719,973.72, 992,903.94 and 490,873.32

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Solution

The fourth proportional to 719,973.72, 992,903.94 and 490,873.32 is: 676,955.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,973.72 : 992,903.94 = 490,873.32 : x
  2. Step 2: Convert to fraction form
    719,973.72/992,903.94 = 490,873.32/x
  3. Step 3: Cross multiply
    719,973.72x = 992,903.94 × 490,873.32
  4. Step 4: Simplify right side
    719,973.72x = 487,390,053,468.88
  5. Step 5: Solve for x
    x = 487,390,053,468.88/719,973.72
  6. Step 6: Final answer
    x = 676,955.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.