Home / 521,108,291.32-781,687,574.74-171,346,615.54

Finding the Fourth Proportional to 521,108,291.32, 781,687,574.74 and 171,346,615.54

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Solution

The fourth proportional to 521,108,291.32, 781,687,574.74 and 171,346,615.54 is: 257,028,188.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,108,291.32 : 781,687,574.74 = 171,346,615.54 : x
  2. Step 2: Convert to fraction form
    521,108,291.32/781,687,574.74 = 171,346,615.54/x
  3. Step 3: Cross multiply
    521,108,291.32x = 781,687,574.74 × 171,346,615.54
  4. Step 4: Simplify right side
    521,108,291.32x = 133,939,520,341,369,792
  5. Step 5: Solve for x
    x = 133,939,520,341,369,792/521,108,291.32
  6. Step 6: Final answer
    x = 257,028,188.91

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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.