Home / 489,191,970.42-732,862,100.93-289,172,426.67

Finding the Fourth Proportional to 489,191,970.42, 732,862,100.93 and 289,172,426.67

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Solution

The fourth proportional to 489,191,970.42, 732,862,100.93 and 289,172,426.67 is: 433,211,346.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,191,970.42 : 732,862,100.93 = 289,172,426.67 : x
  2. Step 2: Convert to fraction form
    489,191,970.42/732,862,100.93 = 289,172,426.67/x
  3. Step 3: Cross multiply
    489,191,970.42x = 732,862,100.93 × 289,172,426.67
  4. Step 4: Simplify right side
    489,191,970.42x = 211,923,512,138,956,704
  5. Step 5: Solve for x
    x = 211,923,512,138,956,704/489,191,970.42
  6. Step 6: Final answer
    x = 433,211,346.37

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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.