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Finding the Fourth Proportional to 623,209, 860,010.18 and 351,292.84

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Solution

The fourth proportional to 623,209, 860,010.18 and 351,292.84 is: 484,773.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,209 : 860,010.18 = 351,292.84 : x
  2. Step 2: Convert to fraction form
    623,209/860,010.18 = 351,292.84/x
  3. Step 3: Cross multiply
    623,209x = 860,010.18 × 351,292.84
  4. Step 4: Simplify right side
    623,209x = 302,115,418,561.11
  5. Step 5: Solve for x
    x = 302,115,418,561.11/623,209
  6. Step 6: Final answer
    x = 484,773.84

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1.5x scale

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.