Home / 501,980,391.86-692,749,763.34-278,971,472.84

Finding the Fourth Proportional to 501,980,391.86, 692,749,763.34 and 278,971,472.84

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Solution

The fourth proportional to 501,980,391.86, 692,749,763.34 and 278,971,472.84 is: 384,989,981.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,980,391.86 : 692,749,763.34 = 278,971,472.84 : x
  2. Step 2: Convert to fraction form
    501,980,391.86/692,749,763.34 = 278,971,472.84/x
  3. Step 3: Cross multiply
    501,980,391.86x = 692,749,763.34 × 278,971,472.84
  4. Step 4: Simplify right side
    501,980,391.86x = 193,257,421,788,521,216
  5. Step 5: Solve for x
    x = 193,257,421,788,521,216/501,980,391.86
  6. Step 6: Final answer
    x = 384,989,981.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.