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Finding the Fourth Proportional to 519,576.84, 716,939.16 and 315,521.64

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Solution

The fourth proportional to 519,576.84, 716,939.16 and 315,521.64 is: 435,373.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,576.84 : 716,939.16 = 315,521.64 : x
  2. Step 2: Convert to fraction form
    519,576.84/716,939.16 = 315,521.64/x
  3. Step 3: Cross multiply
    519,576.84x = 716,939.16 × 315,521.64
  4. Step 4: Simplify right side
    519,576.84x = 226,209,819,543.42
  5. Step 5: Solve for x
    x = 226,209,819,543.42/519,576.84
  6. Step 6: Final answer
    x = 435,373.18

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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.