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Finding the Fourth Proportional to 459,516.66, 688,644.42 and 290,734.85

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Solution

The fourth proportional to 459,516.66, 688,644.42 and 290,734.85 is: 435,703.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,516.66 : 688,644.42 = 290,734.85 : x
  2. Step 2: Convert to fraction form
    459,516.66/688,644.42 = 290,734.85/x
  3. Step 3: Cross multiply
    459,516.66x = 688,644.42 × 290,734.85
  4. Step 4: Simplify right side
    459,516.66x = 200,212,929,526.51
  5. Step 5: Solve for x
    x = 200,212,929,526.51/459,516.66
  6. Step 6: Final answer
    x = 435,703.31

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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.