Home / 918,903,887.36-1,268,091,354.88-501,225,144.32

Finding the Fourth Proportional to 918,903,887.36, 1,268,091,354.88 and 501,225,144.32

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Solution

The fourth proportional to 918,903,887.36, 1,268,091,354.88 and 501,225,144.32 is: 691,692,875.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,903,887.36 : 1,268,091,354.88 = 501,225,144.32 : x
  2. Step 2: Convert to fraction form
    918,903,887.36/1,268,091,354.88 = 501,225,144.32/x
  3. Step 3: Cross multiply
    918,903,887.36x = 1,268,091,354.88 × 501,225,144.32
  4. Step 4: Simplify right side
    918,903,887.36x = 635,599,272,360,672,384
  5. Step 5: Solve for x
    x = 635,599,272,360,672,384/918,903,887.36
  6. Step 6: Final answer
    x = 691,692,875.72

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1.5x scale

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.