Home / 612,051.90-918,077.85-257,466.30

Finding the Fourth Proportional to 612,051.90, 918,077.85 and 257,466.30

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Solution

The fourth proportional to 612,051.90, 918,077.85 and 257,466.30 is: 386,199.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,051.90 : 918,077.85 = 257,466.30 : x
  2. Step 2: Convert to fraction form
    612,051.90/918,077.85 = 257,466.30/x
  3. Step 3: Cross multiply
    612,051.90x = 918,077.85 × 257,466.30
  4. Step 4: Simplify right side
    612,051.90x = 236,374,107,151.46
  5. Step 5: Solve for x
    x = 236,374,107,151.46/612,051.90
  6. Step 6: Final answer
    x = 386,199.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.