Home / 318,913,616.70-478,370,425.05-312,866,999.10

Finding the Fourth Proportional to 318,913,616.70, 478,370,425.05 and 312,866,999.10

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Solution

The fourth proportional to 318,913,616.70, 478,370,425.05 and 312,866,999.10 is: 469,300,498.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,913,616.70 : 478,370,425.05 = 312,866,999.10 : x
  2. Step 2: Convert to fraction form
    318,913,616.70/478,370,425.05 = 312,866,999.10/x
  3. Step 3: Cross multiply
    318,913,616.70x = 478,370,425.05 × 312,866,999.10
  4. Step 4: Simplify right side
    318,913,616.70x = 149,666,319,343,584,992
  5. Step 5: Solve for x
    x = 149,666,319,343,584,992/318,913,616.70
  6. Step 6: Final answer
    x = 469,300,498.65

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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.