Home / 489,191,971.42-732,862,102.43-289,172,427.67

Finding the Fourth Proportional to 489,191,971.42, 732,862,102.43 and 289,172,427.67

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Solution

The fourth proportional to 489,191,971.42, 732,862,102.43 and 289,172,427.67 is: 433,211,347.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,191,971.42 : 732,862,102.43 = 289,172,427.67 : x
  2. Step 2: Convert to fraction form
    489,191,971.42/732,862,102.43 = 289,172,427.67/x
  3. Step 3: Cross multiply
    489,191,971.42x = 732,862,102.43 × 289,172,427.67
  4. Step 4: Simplify right side
    489,191,971.42x = 211,923,513,305,577,440
  5. Step 5: Solve for x
    x = 211,923,513,305,577,440/489,191,971.42
  6. Step 6: Final answer
    x = 433,211,347.87

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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.