Home / 471,938,008.80-707,907,013.20-391,316,440.80

Finding the Fourth Proportional to 471,938,008.80, 707,907,013.20 and 391,316,440.80

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Solution

The fourth proportional to 471,938,008.80, 707,907,013.20 and 391,316,440.80 is: 586,974,661.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,938,008.80 : 707,907,013.20 = 391,316,440.80 : x
  2. Step 2: Convert to fraction form
    471,938,008.80/707,907,013.20 = 391,316,440.80/x
  3. Step 3: Cross multiply
    471,938,008.80x = 707,907,013.20 × 391,316,440.80
  4. Step 4: Simplify right side
    471,938,008.80x = 277,015,652,822,782,656
  5. Step 5: Solve for x
    x = 277,015,652,822,782,656/471,938,008.80
  6. Step 6: Final answer
    x = 586,974,661.20

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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.