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Finding the Fourth Proportional to 708,832.01, 978,166.59 and 402,941.81

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Solution

The fourth proportional to 708,832.01, 978,166.59 and 402,941.81 is: 556,047.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,832.01 : 978,166.59 = 402,941.81 : x
  2. Step 2: Convert to fraction form
    708,832.01/978,166.59 = 402,941.81/x
  3. Step 3: Cross multiply
    708,832.01x = 978,166.59 × 402,941.81
  4. Step 4: Simplify right side
    708,832.01x = 394,144,216,256.13
  5. Step 5: Solve for x
    x = 394,144,216,256.13/708,832.01
  6. Step 6: Final answer
    x = 556,047.43

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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.