Home / 1,150,565,386.65-1,587,779,548.50-621,929,379.78

Finding the Fourth Proportional to 1,150,565,386.65, 1,587,779,548.50 and 621,929,379.78

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Solution

The fourth proportional to 1,150,565,386.65, 1,587,779,548.50 and 621,929,379.78 is: 858,262,173.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,150,565,386.65 : 1,587,779,548.50 = 621,929,379.78 : x
  2. Step 2: Convert to fraction form
    1,150,565,386.65/1,587,779,548.50 = 621,929,379.78/x
  3. Step 3: Cross multiply
    1,150,565,386.65x = 1,587,779,548.50 × 621,929,379.78
  4. Step 4: Simplify right side
    1,150,565,386.65x = 987,486,749,825,973,376
  5. Step 5: Solve for x
    x = 987,486,749,825,973,376/1,150,565,386.65
  6. Step 6: Final answer
    x = 858,262,173.78

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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.