Home / 420,921,000.90-631,381,501.35-420,921,000.90

Finding the Fourth Proportional to 420,921,000.90, 631,381,501.35 and 420,921,000.90

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Solution

The fourth proportional to 420,921,000.90, 631,381,501.35 and 420,921,000.90 is: 631,381,501.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,921,000.90 : 631,381,501.35 = 420,921,000.90 : x
  2. Step 2: Convert to fraction form
    420,921,000.90/631,381,501.35 = 420,921,000.90/x
  3. Step 3: Cross multiply
    420,921,000.90x = 631,381,501.35 × 420,921,000.90
  4. Step 4: Simplify right side
    420,921,000.90x = 265,761,733,497,986,688
  5. Step 5: Solve for x
    x = 265,761,733,497,986,688/420,921,000.90
  6. Step 6: Final answer
    x = 631,381,501.35

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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.