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Finding the Fourth Proportional to 623,447.74, 860,340.57 and 351,513.22

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Solution

The fourth proportional to 623,447.74, 860,340.57 and 351,513.22 is: 485,078.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,447.74 : 860,340.57 = 351,513.22 : x
  2. Step 2: Convert to fraction form
    623,447.74/860,340.57 = 351,513.22/x
  3. Step 3: Cross multiply
    623,447.74x = 860,340.57 × 351,513.22
  4. Step 4: Simplify right side
    623,447.74x = 302,421,084,057.34
  5. Step 5: Solve for x
    x = 302,421,084,057.34/623,447.74
  6. Step 6: Final answer
    x = 485,078.48

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Double scale
Find fourth proportional to 623,448.74, 860,341.95 and 351,514.22
Similar ratio
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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.