Home / 420,707,220.30-631,060,830.45-265,739,024.70

Finding the Fourth Proportional to 420,707,220.30, 631,060,830.45 and 265,739,024.70

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Solution

The fourth proportional to 420,707,220.30, 631,060,830.45 and 265,739,024.70 is: 398,608,537.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,707,220.30 : 631,060,830.45 = 265,739,024.70 : x
  2. Step 2: Convert to fraction form
    420,707,220.30/631,060,830.45 = 265,739,024.70/x
  3. Step 3: Cross multiply
    420,707,220.30x = 631,060,830.45 × 265,739,024.70
  4. Step 4: Simplify right side
    420,707,220.30x = 167,697,489,610,155,072
  5. Step 5: Solve for x
    x = 167,697,489,610,155,072/420,707,220.30
  6. Step 6: Final answer
    x = 398,608,537.05

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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.