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Finding the Fourth Proportional to 456,876.48, 630,548.28 and 275,686.20

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Solution

The fourth proportional to 456,876.48, 630,548.28 and 275,686.20 is: 380,482.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,876.48 : 630,548.28 = 275,686.20 : x
  2. Step 2: Convert to fraction form
    456,876.48/630,548.28 = 275,686.20/x
  3. Step 3: Cross multiply
    456,876.48x = 630,548.28 × 275,686.20
  4. Step 4: Simplify right side
    456,876.48x = 173,833,459,229.74
  5. Step 5: Solve for x
    x = 173,833,459,229.74/456,876.48
  6. Step 6: Final answer
    x = 380,482.40

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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.