Home / 458,135,999.80-686,196,230.10-407,075,673.40

Finding the Fourth Proportional to 458,135,999.80, 686,196,230.10 and 407,075,673.40

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Solution

The fourth proportional to 458,135,999.80, 686,196,230.10 and 407,075,673.40 is: 609,718,058.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,135,999.80 : 686,196,230.10 = 407,075,673.40 : x
  2. Step 2: Convert to fraction form
    458,135,999.80/686,196,230.10 = 407,075,673.40/x
  3. Step 3: Cross multiply
    458,135,999.80x = 686,196,230.10 × 407,075,673.40
  4. Step 4: Simplify right side
    458,135,999.80x = 279,333,792,452,498,848
  5. Step 5: Solve for x
    x = 279,333,792,452,498,848/458,135,999.80
  6. Step 6: Final answer
    x = 609,718,058.77

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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.