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Finding the Fourth Proportional to 556,777.10, 768,354.52 and 302,128.28

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Solution

The fourth proportional to 556,777.10, 768,354.52 and 302,128.28 is: 416,938.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,777.10 : 768,354.52 = 302,128.28 : x
  2. Step 2: Convert to fraction form
    556,777.10/768,354.52 = 302,128.28/x
  3. Step 3: Cross multiply
    556,777.10x = 768,354.52 × 302,128.28
  4. Step 4: Simplify right side
    556,777.10x = 232,141,629,557.83
  5. Step 5: Solve for x
    x = 232,141,629,557.83/556,777.10
  6. Step 6: Final answer
    x = 416,938.18

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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.