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Finding the Fourth Proportional to 708,904.68, 978,346.68 and 403,077.02

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Solution

The fourth proportional to 708,904.68, 978,346.68 and 403,077.02 is: 556,279.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,904.68 : 978,346.68 = 403,077.02 : x
  2. Step 2: Convert to fraction form
    708,904.68/978,346.68 = 403,077.02/x
  3. Step 3: Cross multiply
    708,904.68x = 978,346.68 × 403,077.02
  4. Step 4: Simplify right side
    708,904.68x = 394,349,064,301.29
  5. Step 5: Solve for x
    x = 394,349,064,301.29/708,904.68
  6. Step 6: Final answer
    x = 556,279.39

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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.