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Finding the Fourth Proportional to 673,307.76, 929,184.14 and 371,521.20

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Solution

The fourth proportional to 673,307.76, 929,184.14 and 371,521.20 is: 512,709.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,307.76 : 929,184.14 = 371,521.20 : x
  2. Step 2: Convert to fraction form
    673,307.76/929,184.14 = 371,521.20/x
  3. Step 3: Cross multiply
    673,307.76x = 929,184.14 × 371,521.20
  4. Step 4: Simplify right side
    673,307.76x = 345,211,606,713.77
  5. Step 5: Solve for x
    x = 345,211,606,713.77/673,307.76
  6. Step 6: Final answer
    x = 512,709.98

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Double scale
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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.