Home / 939,387,981.37-1,409,072,999.74-571,024,638.58

Finding the Fourth Proportional to 939,387,981.37, 1,409,072,999.74 and 571,024,638.58

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Solution

The fourth proportional to 939,387,981.37, 1,409,072,999.74 and 571,024,638.58 is: 856,531,503.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,387,981.37 : 1,409,072,999.74 = 571,024,638.58 : x
  2. Step 2: Convert to fraction form
    939,387,981.37/1,409,072,999.74 = 571,024,638.58/x
  3. Step 3: Cross multiply
    939,387,981.37x = 1,409,072,999.74 × 571,024,638.58
  4. Step 4: Simplify right side
    939,387,981.37x = 804,615,400,409,369,984
  5. Step 5: Solve for x
    x = 804,615,400,409,369,984/939,387,981.37
  6. Step 6: Final answer
    x = 856,531,503.88

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1.5x scale

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.