Home / 491,632,072.05-678,452,988.96-279,939,075.24

Finding the Fourth Proportional to 491,632,072.05, 678,452,988.96 and 279,939,075.24

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Solution

The fourth proportional to 491,632,072.05, 678,452,988.96 and 279,939,075.24 is: 386,316,339.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,632,072.05 : 678,452,988.96 = 279,939,075.24 : x
  2. Step 2: Convert to fraction form
    491,632,072.05/678,452,988.96 = 279,939,075.24/x
  3. Step 3: Cross multiply
    491,632,072.05x = 678,452,988.96 × 279,939,075.24
  4. Step 4: Simplify right side
    491,632,072.05x = 189,925,502,323,276,352
  5. Step 5: Solve for x
    x = 189,925,502,323,276,352/491,632,072.05
  6. Step 6: Final answer
    x = 386,316,339.23

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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.