Home / 705,113,638.12-973,080,450.66-391,861,055.08

Finding the Fourth Proportional to 705,113,638.12, 973,080,450.66 and 391,861,055.08

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Solution

The fourth proportional to 705,113,638.12, 973,080,450.66 and 391,861,055.08 is: 540,781,388.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,113,638.12 : 973,080,450.66 = 391,861,055.08 : x
  2. Step 2: Convert to fraction form
    705,113,638.12/973,080,450.66 = 391,861,055.08/x
  3. Step 3: Cross multiply
    705,113,638.12x = 973,080,450.66 × 391,861,055.08
  4. Step 4: Simplify right side
    705,113,638.12x = 381,312,332,073,349,440
  5. Step 5: Solve for x
    x = 381,312,332,073,349,440/705,113,638.12
  6. Step 6: Final answer
    x = 540,781,388.22

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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.