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Finding the Fourth Proportional to 571,690.47, 788,875.94 and 330,051.03

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Solution

The fourth proportional to 571,690.47, 788,875.94 and 330,051.03 is: 455,437.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,690.47 : 788,875.94 = 330,051.03 : x
  2. Step 2: Convert to fraction form
    571,690.47/788,875.94 = 330,051.03/x
  3. Step 3: Cross multiply
    571,690.47x = 788,875.94 × 330,051.03
  4. Step 4: Simplify right side
    571,690.47x = 260,369,316,539.22
  5. Step 5: Solve for x
    x = 260,369,316,539.22/571,690.47
  6. Step 6: Final answer
    x = 455,437.57

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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.