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Finding the Fourth Proportional to 719,157.46, 992,461.12 and 392,488.35

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Solution

The fourth proportional to 719,157.46, 992,461.12 and 392,488.35 is: 541,646.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,157.46 : 992,461.12 = 392,488.35 : x
  2. Step 2: Convert to fraction form
    719,157.46/992,461.12 = 392,488.35/x
  3. Step 3: Cross multiply
    719,157.46x = 992,461.12 × 392,488.35
  4. Step 4: Simplify right side
    719,157.46x = 389,529,422,465.65
  5. Step 5: Solve for x
    x = 389,529,422,465.65/719,157.46
  6. Step 6: Final answer
    x = 541,646.92

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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.