Home / 1,391,620,749,779.40-2,087,731,578,138.60-423,604,886,404.05

Finding the Fourth Proportional to 1,391,620,749,779.40, 2,087,731,578,138.60 and 423,604,886,404.05

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Solution

The fourth proportional to 1,391,620,749,779.40, 2,087,731,578,138.60 and 423,604,886,404.05 is: 635,498,786,677.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,620,749,779.40 : 2,087,731,578,138.60 = 423,604,886,404.05 : x
  2. Step 2: Convert to fraction form
    1,391,620,749,779.40/2,087,731,578,138.60 = 423,604,886,404.05/x
  3. Step 3: Cross multiply
    1,391,620,749,779.40x = 2,087,731,578,138.60 × 423,604,886,404.05
  4. Step 4: Simplify right side
    1,391,620,749,779.40x = 884,373,297,999,549,762,109,440
  5. Step 5: Solve for x
    x = 884,373,297,999,549,762,109,440/1,391,620,749,779.40
  6. Step 6: Final answer
    x = 635,498,786,677.15

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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.