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Finding the Fourth Proportional to 623,666.48, 860,613 and 368,967.92

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Solution

The fourth proportional to 623,666.48, 860,613 and 368,967.92 is: 509,148.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,666.48 : 860,613 = 368,967.92 : x
  2. Step 2: Convert to fraction form
    623,666.48/860,613 = 368,967.92/x
  3. Step 3: Cross multiply
    623,666.48x = 860,613 × 368,967.92
  4. Step 4: Simplify right side
    623,666.48x = 317,538,588,534.96
  5. Step 5: Solve for x
    x = 317,538,588,534.96/623,666.48
  6. Step 6: Final answer
    x = 509,148.08

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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.