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Finding the Fourth Proportional to 670,754.42, 925,709.02 and 384,312.50

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Solution

The fourth proportional to 670,754.42, 925,709.02 and 384,312.50 is: 530,390.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,754.42 : 925,709.02 = 384,312.50 : x
  2. Step 2: Convert to fraction form
    670,754.42/925,709.02 = 384,312.50/x
  3. Step 3: Cross multiply
    670,754.42x = 925,709.02 × 384,312.50
  4. Step 4: Simplify right side
    670,754.42x = 355,761,547,748.75
  5. Step 5: Solve for x
    x = 355,761,547,748.75/670,754.42
  6. Step 6: Final answer
    x = 530,390.17

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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.