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Finding the Fourth Proportional to 717,703.02, 990,224.66 and 427,071.69

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Solution

The fourth proportional to 717,703.02, 990,224.66 and 427,071.69 is: 589,236.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,703.02 : 990,224.66 = 427,071.69 : x
  2. Step 2: Convert to fraction form
    717,703.02/990,224.66 = 427,071.69/x
  3. Step 3: Cross multiply
    717,703.02x = 990,224.66 × 427,071.69
  4. Step 4: Simplify right side
    717,703.02x = 422,896,920,093.56
  5. Step 5: Solve for x
    x = 422,896,920,093.56/717,703.02
  6. Step 6: Final answer
    x = 589,236.65

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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.