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Finding the Fourth Proportional to 611,017.56, 916,407.68 and 307,330.74

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Solution

The fourth proportional to 611,017.56, 916,407.68 and 307,330.74 is: 460,936.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,017.56 : 916,407.68 = 307,330.74 : x
  2. Step 2: Convert to fraction form
    611,017.56/916,407.68 = 307,330.74/x
  3. Step 3: Cross multiply
    611,017.56x = 916,407.68 × 307,330.74
  4. Step 4: Simplify right side
    611,017.56x = 281,640,248,899.43
  5. Step 5: Solve for x
    x = 281,640,248,899.43/611,017.56
  6. Step 6: Final answer
    x = 460,936.42

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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.