Home / 659,026,085.72-909,395,887.14-391,055,740.90

Finding the Fourth Proportional to 659,026,085.72, 909,395,887.14 and 391,055,740.90

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Solution

The fourth proportional to 659,026,085.72, 909,395,887.14 and 391,055,740.90 is: 539,621,253.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,026,085.72 : 909,395,887.14 = 391,055,740.90 : x
  2. Step 2: Convert to fraction form
    659,026,085.72/909,395,887.14 = 391,055,740.90/x
  3. Step 3: Cross multiply
    659,026,085.72x = 909,395,887.14 × 391,055,740.90
  4. Step 4: Simplify right side
    659,026,085.72x = 355,624,482,420,875,200
  5. Step 5: Solve for x
    x = 355,624,482,420,875,200/659,026,085.72
  6. Step 6: Final answer
    x = 539,621,253.44

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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.