Home / 318,852,030.20-478,278,045.30-312,805,412.60

Finding the Fourth Proportional to 318,852,030.20, 478,278,045.30 and 312,805,412.60

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Solution

The fourth proportional to 318,852,030.20, 478,278,045.30 and 312,805,412.60 is: 469,208,118.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,852,030.20 : 478,278,045.30 = 312,805,412.60 : x
  2. Step 2: Convert to fraction form
    318,852,030.20/478,278,045.30 = 312,805,412.60/x
  3. Step 3: Cross multiply
    318,852,030.20x = 478,278,045.30 × 312,805,412.60
  4. Step 4: Simplify right side
    318,852,030.20x = 149,607,961,297,588,000
  5. Step 5: Solve for x
    x = 149,607,961,297,588,000/318,852,030.20
  6. Step 6: Final answer
    x = 469,208,118.90

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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.