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Finding the Fourth Proportional to 486,871,655.58, 671,899,133.43 and 266,855,645.34

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Solution

The fourth proportional to 486,871,655.58, 671,899,133.43 and 266,855,645.34 is: 368,269,696.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,871,655.58 : 671,899,133.43 = 266,855,645.34 : x
  2. Step 2: Convert to fraction form
    486,871,655.58/671,899,133.43 = 266,855,645.34/x
  3. Step 3: Cross multiply
    486,871,655.58x = 671,899,133.43 × 266,855,645.34
  4. Step 4: Simplify right side
    486,871,655.58x = 179,300,076,854,849,408
  5. Step 5: Solve for x
    x = 179,300,076,854,849,408/486,871,655.58
  6. Step 6: Final answer
    x = 368,269,696.54

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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.