Home / 619,123.60-928,685.40-406,547.20

Finding the Fourth Proportional to 619,123.60, 928,685.40 and 406,547.20

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Solution

The fourth proportional to 619,123.60, 928,685.40 and 406,547.20 is: 609,820.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,123.60 : 928,685.40 = 406,547.20 : x
  2. Step 2: Convert to fraction form
    619,123.60/928,685.40 = 406,547.20/x
  3. Step 3: Cross multiply
    619,123.60x = 928,685.40 × 406,547.20
  4. Step 4: Simplify right side
    619,123.60x = 377,554,449,050.88
  5. Step 5: Solve for x
    x = 377,554,449,050.88/619,123.60
  6. Step 6: Final answer
    x = 609,820.80

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Similar ratio
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1.5x scale

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.