Home / 458,136,013.80-686,196,251.10-407,075,687.40

Finding the Fourth Proportional to 458,136,013.80, 686,196,251.10 and 407,075,687.40

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Solution

The fourth proportional to 458,136,013.80, 686,196,251.10 and 407,075,687.40 is: 609,718,079.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,136,013.80 : 686,196,251.10 = 407,075,687.40 : x
  2. Step 2: Convert to fraction form
    458,136,013.80/686,196,251.10 = 407,075,687.40/x
  3. Step 3: Cross multiply
    458,136,013.80x = 686,196,251.10 × 407,075,687.40
  4. Step 4: Simplify right side
    458,136,013.80x = 279,333,810,607,835,488
  5. Step 5: Solve for x
    x = 279,333,810,607,835,488/458,136,013.80
  6. Step 6: Final answer
    x = 609,718,079.77

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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.