Home / 442,023,139.40-661,759,250.70-391,004,803.40

Finding the Fourth Proportional to 442,023,139.40, 661,759,250.70 and 391,004,803.40

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Solution

The fourth proportional to 442,023,139.40, 661,759,250.70 and 391,004,803.40 is: 585,378,960.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,023,139.40 : 661,759,250.70 = 391,004,803.40 : x
  2. Step 2: Convert to fraction form
    442,023,139.40/661,759,250.70 = 391,004,803.40/x
  3. Step 3: Cross multiply
    442,023,139.40x = 661,759,250.70 × 391,004,803.40
  4. Step 4: Simplify right side
    442,023,139.40x = 258,751,045,718,084,800
  5. Step 5: Solve for x
    x = 258,751,045,718,084,800/442,023,139.40
  6. Step 6: Final answer
    x = 585,378,960.18

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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.