Home / 1,422,779,911-1,963,436,277.18-771,614,215

Finding the Fourth Proportional to 1,422,779,911, 1,963,436,277.18 and 771,614,215

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Solution

The fourth proportional to 1,422,779,911, 1,963,436,277.18 and 771,614,215 is: 1,064,827,616.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,779,911 : 1,963,436,277.18 = 771,614,215 : x
  2. Step 2: Convert to fraction form
    1,422,779,911/1,963,436,277.18 = 771,614,215/x
  3. Step 3: Cross multiply
    1,422,779,911x = 1,963,436,277.18 × 771,614,215
  4. Step 4: Simplify right side
    1,422,779,911x = 1,515,015,341,718,768,128
  5. Step 5: Solve for x
    x = 1,515,015,341,718,768,128/1,422,779,911
  6. Step 6: Final answer
    x = 1,064,827,616.70

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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.