Home / 858,045,645.10-1,287,464,300.07-391,849,984.72

Finding the Fourth Proportional to 858,045,645.10, 1,287,464,300.07 and 391,849,984.72

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Solution

The fourth proportional to 858,045,645.10, 1,287,464,300.07 and 391,849,984.72 is: 587,955,744.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,045,645.10 : 1,287,464,300.07 = 391,849,984.72 : x
  2. Step 2: Convert to fraction form
    858,045,645.10/1,287,464,300.07 = 391,849,984.72/x
  3. Step 3: Cross multiply
    858,045,645.10x = 1,287,464,300.07 × 391,849,984.72
  4. Step 4: Simplify right side
    858,045,645.10x = 504,492,866,309,974,976
  5. Step 5: Solve for x
    x = 504,492,866,309,974,976/858,045,645.10
  6. Step 6: Final answer
    x = 587,955,744.77

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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.