Home / 442,897,266.40-664,345,899.60-420,726,335.20

Finding the Fourth Proportional to 442,897,266.40, 664,345,899.60 and 420,726,335.20

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Solution

The fourth proportional to 442,897,266.40, 664,345,899.60 and 420,726,335.20 is: 631,089,502.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,897,266.40 : 664,345,899.60 = 420,726,335.20 : x
  2. Step 2: Convert to fraction form
    442,897,266.40/664,345,899.60 = 420,726,335.20/x
  3. Step 3: Cross multiply
    442,897,266.40x = 664,345,899.60 × 420,726,335.20
  4. Step 4: Simplify right side
    442,897,266.40x = 279,507,815,643,855,136
  5. Step 5: Solve for x
    x = 279,507,815,643,855,136/442,897,266.40
  6. Step 6: Final answer
    x = 631,089,502.80

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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.