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Finding the Fourth Proportional to 473,139.40, 709,709.10 and 286,515.40

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Solution

The fourth proportional to 473,139.40, 709,709.10 and 286,515.40 is: 429,773.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,139.40 : 709,709.10 = 286,515.40 : x
  2. Step 2: Convert to fraction form
    473,139.40/709,709.10 = 286,515.40/x
  3. Step 3: Cross multiply
    473,139.40x = 709,709.10 × 286,515.40
  4. Step 4: Simplify right side
    473,139.40x = 203,342,586,670.14
  5. Step 5: Solve for x
    x = 203,342,586,670.14/473,139.40
  6. Step 6: Final answer
    x = 429,773.10

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Similar ratio
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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.