Home / 810,119,878.85-1,118,145,283.08-492,512,637.35

Finding the Fourth Proportional to 810,119,878.85, 1,118,145,283.08 and 492,512,637.35

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Solution

The fourth proportional to 810,119,878.85, 1,118,145,283.08 and 492,512,637.35 is: 679,776,779.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,119,878.85 : 1,118,145,283.08 = 492,512,637.35 : x
  2. Step 2: Convert to fraction form
    810,119,878.85/1,118,145,283.08 = 492,512,637.35/x
  3. Step 3: Cross multiply
    810,119,878.85x = 1,118,145,283.08 × 492,512,637.35
  4. Step 4: Simplify right side
    810,119,878.85x = 550,700,682,304,602,368
  5. Step 5: Solve for x
    x = 550,700,682,304,602,368/810,119,878.85
  6. Step 6: Final answer
    x = 679,776,779.57

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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.