Home / 442,897,245.40-664,345,868.10-420,726,314.20

Finding the Fourth Proportional to 442,897,245.40, 664,345,868.10 and 420,726,314.20

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Solution

The fourth proportional to 442,897,245.40, 664,345,868.10 and 420,726,314.20 is: 631,089,471.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,897,245.40 : 664,345,868.10 = 420,726,314.20 : x
  2. Step 2: Convert to fraction form
    442,897,245.40/664,345,868.10 = 420,726,314.20/x
  3. Step 3: Cross multiply
    442,897,245.40x = 664,345,868.10 × 420,726,314.20
  4. Step 4: Simplify right side
    442,897,245.40x = 279,507,788,439,712,352
  5. Step 5: Solve for x
    x = 279,507,788,439,712,352/442,897,245.40
  6. Step 6: Final answer
    x = 631,089,471.30

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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.