Home / 640,413,748.56-883,771,729.02-347,058,316.56

Finding the Fourth Proportional to 640,413,748.56, 883,771,729.02 and 347,058,316.56

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Solution

The fourth proportional to 640,413,748.56, 883,771,729.02 and 347,058,316.56 is: 478,940,886.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,413,748.56 : 883,771,729.02 = 347,058,316.56 : x
  2. Step 2: Convert to fraction form
    640,413,748.56/883,771,729.02 = 347,058,316.56/x
  3. Step 3: Cross multiply
    640,413,748.56x = 883,771,729.02 × 347,058,316.56
  4. Step 4: Simplify right side
    640,413,748.56x = 306,720,328,497,001,664
  5. Step 5: Solve for x
    x = 306,720,328,497,001,664/640,413,748.56
  6. Step 6: Final answer
    x = 478,940,886.55

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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.