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Finding the Fourth Proportional to 670,780.80, 925,808.94 and 384,492.60

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Solution

The fourth proportional to 670,780.80, 925,808.94 and 384,492.60 is: 530,675.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,780.80 : 925,808.94 = 384,492.60 : x
  2. Step 2: Convert to fraction form
    670,780.80/925,808.94 = 384,492.60/x
  3. Step 3: Cross multiply
    670,780.80x = 925,808.94 × 384,492.60
  4. Step 4: Simplify right side
    670,780.80x = 355,966,686,443.84
  5. Step 5: Solve for x
    x = 355,966,686,443.84/670,780.80
  6. Step 6: Final answer
    x = 530,675.13

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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.