Home / 1,264,736,069.12-1,897,199,782.32-391,425,765.92

Finding the Fourth Proportional to 1,264,736,069.12, 1,897,199,782.32 and 391,425,765.92

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Solution

The fourth proportional to 1,264,736,069.12, 1,897,199,782.32 and 391,425,765.92 is: 587,168,260.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264,736,069.12 : 1,897,199,782.32 = 391,425,765.92 : x
  2. Step 2: Convert to fraction form
    1,264,736,069.12/1,897,199,782.32 = 391,425,765.92/x
  3. Step 3: Cross multiply
    1,264,736,069.12x = 1,897,199,782.32 × 391,425,765.92
  4. Step 4: Simplify right side
    1,264,736,069.12x = 742,612,877,897,863,296
  5. Step 5: Solve for x
    x = 742,612,877,897,863,296/1,264,736,069.12
  6. Step 6: Final answer
    x = 587,168,260.66

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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.